Now that you are here, you must be looking for the best step drill bit set! If you aren’t for it, you shall use our search and look for the topic you are interested in. As this piece is a lengthy one and covers a few more aspects other than the best list, they are the best step drill bit set brands in United States of America and a buyer’s guide for making an informed buying decision.
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Best step drill bit set in 2021
1. CO-Z 5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case -Step Drill Bits
By CO-Z
More Pictures- chuck sizes.
- Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.
- Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc
- Please mark the spot that you are to drill for easier drilling and improved drill bits life.
- (the board must be smaller in thickness than the height of step drill bits).
- Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in
- All the bits come in a well-organized case for easy transport and storage.
2. NEIKO 10173A Quick Change SAE Spiral Grooved Step Drill Bit Set | 5-Piece Set with total 50 Step Sizes | High-Speed Steel and Titanium Nitride Coating | Two-Flute Design | Handy Storage Case -Step Drill Bits
By Neiko
- [QUALITY]: Made with heavy duty High Speed Steel for powerful punching and drilling of clean holes.
- [CONVENIENT]: Two-Flute Spiral Grooved Design deburrs chip, dust, and debris for faster and smoother cutting.
- [DURABLE]: Coated in Titanium Nitride for maximum durability.
- [SIZES]: 5 step drill bits with 50 sizes total.
- [EFFICIENT]: 1/4 inch Quick Change Hex Shank to fit most pistol drills and drill presses securely.
3. CO-Z HSS 5PCS Titanium Step Drill Bit Set with Automatic Center Punch, 50 Sizes in 5 High Speed Steel Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY Lovers -Step Drill Bits
By CO-Z
- HSS Steel Construction —– High-speed steel construction for longer cutting edge life even at extreme temperatures.
- Titanium Coating —– Coated by titanium, this step drill set performs well in heat, corrosion and rust resistance.
- Automatic Center Punch —– Delivers an automatic, high-impact, spring-loaded strike when pressed against surface, adjustable cap regulates striking force.
- A Must-have for Handyman or Professionals —– Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal.
- 50 Size In 5 —– The bits set includes five standard step drill bits that can replace 50 individual drill bits.
4. DEWALT Step Drill Bit Set, 3-Piece (DWA1790IR) -Tools & Home Improvement
By DEWALT
- Works with rotary drills
- 1/4-inch hex shank
- Optimized for impact driver usage
- Titanium two flute spiral design provides longer life and better chip removal for the DEWALT drill bit set
- Split point tip of the drill bit increases speed
- Laser engraved numbers increases step visiblity
5. COMOWARE Step Drill Bit Set & Automatic Center Punch- Unibit, Titanium Coated, Double Cutting Blades, High Speed Steel, Short Length Drill Bits Set of 5 pcs, Total 50 Sizes with Aluminum Case -Step Drill Bits
By COMOWARE
- Meet Your Demands – With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal/wood/plastic countersunk
- Easy Organizing – A drill bits holder with size index is included in the metal kit for easy storage and organizing without fear of it falling out.
- Suitable for Home DIY, and General Building/Engineering Use.
- Design – The split point tip is at 118 degrees to increase the wear resistance
- HSS Titanium Coating – High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
- The two flute design provides a smoother cutting, allows the material particles escape easily for a much more clean drilling operation.
- Set Includes – The drill bits set includes five common sizes for versatility, can fit the majority of brands currently on the market.
6. Neiko 10197A Titanium Step Drill Bit Set, High Speed Steel | 5-Piece Set | Total 50 Sizes -Step Drill Bits
By Neiko
- CUTS AND DEBURRS: Cuts through steel, sheet metal and other surfaces with only a small amount of pressure and deburrs as you drill
- A COMPLETE SAE SET: Two popular 1/4″ and 3/8″ shank sizes to cover a wide range of drilling requirements
- VERSATILE: Set includes five standard SAE step drill bits with a two-flute design for faster, smoother cutting and a tri-flat shank for a sure grip
- SUPER STRONG: Made of super strong HSS steel for added durability and bit life
- CARRYING CASE: Includes aluminum carrying case
7. IRWIN Step Drill Bit Set, General Purpose, 4-Piece (10225) -Step Drill Bits
By Irwin Tools
- Set includes HSS #1, 2, 4, and 21 size step drills
- 3-flatted shanks prevents slipping in drill chuck
- Sizes clearly laser-etched to make precise drilling easy
- Non-skid self-starting tips eliminate skidding and the need for center punching
- Single-flute cutting edges for greater control through steps
8. Senrob 5 Pcs Step Drill Bit Set with Automatic Center Punch& Aluminum Case, High Speed Steel Titanium Cobalt Bits for Metal -Step Drill Bits
By Senrob
- Automatic Center Punch: center punch with spring inside creates an automatic, high-impact force and the top red cap could save more effort
- Durable Materials: ability of oxidation resistance, no rust and wear, long service life with titanium and cobalt plating coating
- Package Includes: 5 x step drill bits，1 x automatic center punch，1 x aluminum case
- Unique Shape: straight grooved is for excellent heat dissipation and chip removal, v-type opening design ensures cutting faster and smoother
- Wide Applications: 50 hole size choices to cut through iron, aluminum, PV and insulating plate as well as other types plates easily
9. Step Drill Bit Set & Automatic Center Punch 5pcs HSS Cobalt Titanium Step Drill Bit Set, Multiple Hole 50 Sizes High Speed Step Drill Bit Set with Aluminum Case -Step Drill Bits
By Powerextra
- AUTOMATIC CENTER PUNCH & ALUMINUM CASE: The center punch help you mark the center point that you want to drill, with exquisite aluminum case protects the drill bits not easy to dull and prolongs the drills lifespan.
- TITANIUM COATING: The Titanium coating resists the drill bits from corrosion and rust, deduces friction making it easily to do multiple drills on surfaces such as plastic, aluminum, copper, stainless steel, and other types of sheet metal.
- 135 DEGREE SPLIT POINT AND TWO-FLUTE DESIGN:The drill bit point is designed as X-shape with 135 degree, which can prevent the drill slipping while working in high speed
- chuck sizes.
- With two-flute design, provides a faster and smoother cutting.
- 50 SIZES IN 5 PIECES STEP DRILL BITS: The bits set includes five standard step drill bits that can replace 50 individual drill bits and process 50 different kinds of diameter holes, compatibility with 1/4, 3/8 and 1/2 in
- HIGH QUALITY AND WIDELY USE: The step drill bits are make by high speed steel, strong and durable can used for stainless steel sheet, aluminum alloy, plastic material and wood.
10. Neiko 10193A Titanium Step Drill Bit Set, High Speed Steel | 3-Piece Set | Total 28 Sizes -Step Drill Bits
By Neiko
- TITANIUM | HIGH SPEED STEEL: classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal
- TRI-FLATTED SHANK: fits into power tools chuck securely and eliminates slip
- TWO-FLUTE DESIGN: clears chips faster and allows particles to escape easily
- 135° SPLIT POINT TIP: increases cutting speed with self-centering and prevents walking
- SET INCLUDES: Bit #1 (6 steps): 3/16″, 1/4″, 5/16″, 3/8″, 7/16″, 1/2″; Bit #2 (13 steps): 1/8″, 5/32″, 3/16″, 7/32″, 1/4″, 9/32″, 5/16″, 11/32″, 3/8″, 13/32″, 7/16″, 15/32″, 1/2″; Bit #3 (9 steps): 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″
11. Protoiya 7 Pieces Titanium Step Drill Bit Set, Multiple Hole 50 Sizes High Speed Steel Spiral Grooved Step Drill Bit Set with Twist Drill Bit & Automatic Center Punch & Aluminum Case -Step Drill Bits
By Protoiya
- The step drill bits can work with aluminum alloy, plastic material, and wood
- Widely Application- The step up drill bit can be used to chamfer, bur, and drill or enlarge holes
- Professional 7PCS Step Drill Bit Set- Include 5pcs step drill bits enable 50 sizes, with 1pcs automatic center punch and 1pcs twist drill bits.With two-flute design, provides a faster and smoother cutting.
- This drill kit is ideal for DIY projects at home, garden, workshop and many more.
- Fast Cutting & Easy To Store- X-type opening design can facilitate the removal of cutting waste when drilling to keep the drill bit clean.With two-flute design, provides a faster and smoother cutting.7 pcs step drill set includes a sturdy blow molded organizing case for secure storage and easy carrying.
- 50 Size Titanium Step Drill Bit – The step bit set includes 5 standard step drill bits that can replace 50 individual drill bits and process 50 different kinds of diameter holes, compatibility with 1/4, 3/8 and 1/2 inch.You don’t have to replace drill bit constantly with the step drill bits
- For make your holes more accurate, please do use a center punch to locate before drilling.
- Titanium Coating- The cone drill bits are made by high speed steel, strong and durable
- The titanium coating resists the drill bits from corrosion and rust, deduces friction making it easily to do multiple drills on surfaces such as thin iron, wood, plastic board, composite board, not suitable for drill stainless steel.
12. Step Drill Bit Set, Hss, 1/8-1-3/8 In, 4 Pc -Step Drill Bits
By MILWAUKEE’S
- Manufacturer: Milwaukee
- Power Cutting & Sawing
- Country of manufacture: United States
13. Milwaukee GIDDS2-2475514 Step Bit 3-Piece Set (#1, 2, 4) -Step Drill Bits
By MILWAUKEE’S
- Delivers high performance in heavy-duty applications
- Soft grip handle design offers increased gripping surface and comfort
- All-metal ratcheting keyless chuck for greater bit retention
14. Neiko 10169A Titanium Step Drill Bit Set with Automatic Center Punch, 5-Piece | High Speed Steel | SAE | Total 41 Sizes -Step Drill Bits
By Neiko
- Set includes (2) 1/4-inch shank step drill bits, (2) 3/8-inch shank step drill bits, and (1) automatic center punch
- Two-flute design deburrs during drilling, clearing chips faster and allowing particles to escape for cleaner operation
- Classic high speed steel with titanium coating for drilling holes in plastic, aluminum, copper, stainless steel, and many other sheet metal types
- Each step drill bit features a tri-flatted shank for a secure fit into power tool chucks, eliminating slip
- Automatic center punch creates spring-loaded high-impact strike against surfaces; red cap adjusts force
15. NordWolf 12-Piece Step, Countersink & Cone Drill Set, 1/4″ Hex Shank Titanium HSS, with Multi Drill Saw Automatic Center Punch in Storage Box, Metric, Compatible with DeWalt, Makita, Ryobi, SKIL -Step Drill Bits
By NordWolf
- Step Drills3 piece HSS Titanium coated 5/9/14 step drills (4-12/20/32mm)
- Automatic brass center punch provides high impact spring-loaded strike when pressed against working surface; striking force is adjustable by turning cap
- All drills come with 1/4″ (6.35mm) hex shank
- Cone DrillHSS Titanium coated cone drill (8-20mm) and step drills are precision ground, heat treatment, and hardened for consistently accurate drilling or enlarging holes into sheet steel, non-ferrous metals, wood and plastics
- Box can be re-used to store other tools by taking out foam inlay
- Laser marking of step size provide convenient and accurate drilling
- Ergonomic Storage BoxInsert hex shank into black plastic holder at 10°-15° first, then push head of product down to fix firmly
- Countersink Drill Bits6 piece HSS Titanium coated countersink drill bits: 6.3, 8.3, 10.4, 12.4, 16.5, 20.5mm – 90° point, three cutting edges, ideal for deep countersinking on metals, mild steel, non-ferrous metals, wood and plastics
- Multi Drill Saw & Center PunchHSS Titanium coated multi drill saw (6mm) can be used in combination with drill, saw, rotary file, reamer and router for wood pull grooving
16. Trepot 5PCS HSS Titanium Step Drill Bit Set & Automatic Center Punch, High Speed Steel Drill Bits, Double Cutting Blades Design, 50 Sizes with Aluminum Case, Short Length Drill Bits Set -Step Drill Bits
By Trepot
- Set Includes – The drill bits set includes five common sizes for versatility, can fit the majority of brands currently on the market.
- Suitable for Home DIY, and General Building/Engineering Use.
- HSS Titanium Coating – High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
- The two flute design provides a smoother cutting, allows the material particles escape easily for a much more clean drilling operation.
- Meet Your Demands – With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal/wood/plastic countersunk
- Design – The split point tip is at 118 degrees to increase the wear resistance
- Easy Organizing – A drill bits holder with size index is included in the metal kit for easy storage and organizing without fear of it falling out.
17. Step Drill Bit Set & Automatic Center Punch, 50 Sizes in 5 High Speed Steel Titanium Coated Double Sided Drill with Aluminum Case, Multiple Hole Stepped Up Bits for DIY Lovers -Step Drill Bits
- Automatic Center Punch- It can realize automatic and high impact force by spring loading, the knurled surface of the brass body can be non-slip
- Titanium Coating- Titanium coating can reduce surface friction, make the operation cooler, improve the sharpness of the drill bit, wear and corrosion resistance, and maintain good gloss even after long-term use
- High-Speed Steel- The drill bit is made of high-speed steel with high hardness, high wear resistance and heat resistance, which can easily cut steel plate, aluminum plate, copper, plastic and wood board, etc, suitable for household DIY and general construction/engineering use
- The laser marking is clear, and the diameter is clear at a glance
- 50 in 5 Drill Bit- The drill bit group includes five standard stepped drill bits, which can replace 50 single drill bits and process 23 holes with diameters ranging from 1/8″ to 1-3/8″
- The cemented carbide drill bit makes the center punch ten times stronger than the ordinary drill bit
- Unique Design- Double-edged and X-shaped opening design to ensure faster and smoother cutting; double spiral grooves reduce cutting resistance and chip removal more smoothly; triangular shank design can prevent the drill from slipping, suitable for a variety of models
- The package includes 5 step drills, 1 automatic center punch, and 1 aluminum storage box
18. Klein Tools KTSB15 Step Drill Bit #15 Double Fluted 7/8 to 1-3/8-Inch -Step Drill Bits
By Klein Tools
- Thick 3/8-Inch hex shank won’t round out in the drill chuck for a more positive grip
- High-visibility silver targets for primary hole sizes
- Two flutes cut faster and keep bit cooler
- Fast-starting, non-walking drill tip
- 3 hole sizes
19. BOSCH IMSDC002 2 pc. High-Speed Steel Impact Tough Turbo Step Drill Bit Set -Step Drill Bits
By BOSCH
- Cordless step drill bit design – made for smooth drilling in cordless drills using high-speed and low-speed mode, with 2X cutting edges and optimized angles on the bit steps
- Hex shank impact-ready step drill bit – optimized for impact drivers, and the bits are drill/driver compatible
- 2X holes per charge – features efficient operation to boost user productivity
- 2X cutting edges – provides 2X faster cutting through tough material, with two sharp edges
- 2X longer life and clean holes – designed for burr-free holes, these bits help manage heat for longer bit life
20. HYCLAT 5pcs Titanium Step Drill Bit, Hss Cobalt Multiple Hole 50 Sizes(1/8”-1 3/8”), High-Speed Metal Steel Step Drill Bit Set with Aluminum Case, HTSDB5 -Step Drill Bits
By HYCLAT
- It’s can work as 50pcs twist drill bits
- FEATURES: 5pcs step drill bits enable 50 sizes – each step drill bit can drill several bore diameters
- WHAT YOU GET – HYCLAT Step Drill, Aluminum Case or Canvas Bag, 24 months warranty – Ideal Gift for Father’s Day, Perfect for DIY lover
- You don’t have to replace drill bit constantly for different bore sizes
- TITANIUM HIGH-SPEED STEEL: classic and sturdy high-speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of the metal sheet
- The protective aluminum case makes the drills not easy to dull
- DOUBLE CUTTING BLADES & THREE-SIDED SHANK – Double cutting blades and X-type openings design ensure a faster and smoother cutting; 3-sided shank design prevents slip in drill chuck can cut through the wood, sheet metal, steel, and other surfaces
- WIDELY APPLICATION: The step drill bits can be used to chamfer, bur, and drill or enlarge holes
- The step drill bits can work with stainless steel sheets, aluminum alloy, plastic material, and wood
21. HYCLAT 5 pcs Titanium Step Drill Bits Set & Automatic Center Punch – Hss Cobalt Multiple Hole 50 Sizes(1/8”-1 3/8”), High-Speed Metal Steel Drill Double Side with Aluminum Case -Step Drill Bits
By HYCLAT
- Double Cutting Side & Three-Side Shank – Double cutting side and X-type openings design ensures a faster and smoother cutting; 3-sided shank design prevents slip in drill chuck can cut through the wood, sheet metal, steel, and other surfaces.
- Titanium High-Speed Steel: classic high-speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, and many other types of metal sheet.
- It can work as 50 pcs twist drill bits
- Dimensions: 5 Pcs step drill bits enable 50 sizes – each step drill bit can drill several bore diameters
- Automatic Center Punch – the center punch delivers an automatic, high-impact, spring-loaded strike-through adjusting the cap; it has a deeply knurled surface for nonslip control.
- What You Get – HYCLAT Step Drill, Automatic Center Punch, Aluminum Case, 24 months warranty – Ideal Gift for Father’s Day, Perfect for DIY lover.
- You don’t have to replace drill bit constantly with the step drill bits.
22. 7PCS Step Drill Bit Set with 50 Sizes,Multiple Hole High Speed Steel Stepped Up Bits (7PCS) -Step Drill Bits
By HEJIAHUAN
- The protective aluminum case makes the drills not easy to dull
- The step drill bits can work with aluminum alloy, plastic material, and wood
- DURABLE STEPPED UP BITS – Cobalt high speed steel along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.
- SUPPER VALUE 7PCS PACKAGE – 5pcs step drill bits enable 50 sizes,Plus 1pcs Automatic Center Punch and 1pcs twist drill bits
- HSS TITANIUM COATING DRILL – High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
- EASY TO STORE – Set includes a sturdy blow molded organizing case for secure storage and easy carrying
- WIDELY APPLICATION – The step drill bits can be used to chamfer, bur, and drill or enlarge holes
23. CO-Z HSS 5PCS Titanium Spiral Grooved Step Drill Bit Set with Automatic Center Punch, Unibit Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped up Bits for DIY Lovers -Step Drill Bits
By CO-Z
- in thickness.
- Clear Laser Measurements —– The well-manufactured bits come with very highly visible laser measurements for you to easily find the size you want, improving your drilling accuracy.
- 50 Sizes In 5 —– Our bits set includes five standard step drill bits that are capable to drill 50 holes with different diameters, saving you time and efforts; to make your holes more accurate, please do use a center punch to locate before drilling.
- Universal Compatibility —– The step drill bits help you to drill holes with different diameters simultaneously, compatible with aluminum, copper, steel sheets and plastic and wood board that is less than 3mm/0.12 in
- Durable Titanium Coated Bits W/Spiral Grooves —– The spiral grooved drill cut more smoothly than straight grooved ones, the drill bit is sharp and can easily drill perfect holes in the metal sheet while the Titanium coating improves durability hence lengthening the service life.
- Less Splashing & Saves Your Money —– X-type opening design can facilitate the removal of cutting waste when drilling to keep the drill bit clean.
24. 5pcs Titanium Step Drill Bit Set, 50 Sizes Cobalt Step Drill Bits for Metal, Wood, Plastic Sheet, Stainless Steel Metric Step Drill Bit with Aluminum Case (5pcs) -Step Drill Bits
By Supplim
- 135° SPLIT POINT TIP AND TWO-FLUTE DESIGN: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily.
- Convenient: Self-centering features prevent slipping and increase cutting speed
- Portable-coming with an aluminum carrying case
- The step drill bits can work with aluminum alloy, plastic material and wood,soft metal(Not recommended for Metal and Stainless Steel)
- Widely application: The step drill bits can be used to chamfer, bur, and drill or enlarge holes
- Effectively reduces the friction to ensure cooler running so as to prolongs service life.
- HSS & Titanium Coating- The step drill bit is made of superior high-speed steel(M2), titanium coated surface, outstanding durability and sharpness
- For DIY lover
- 3-sided (TRI-FLAT) shank will not slip in your drill’s chuck;Cobalt coated for smoother cooler cutting.
- 50 Sizes in 5 Pcs- The step cone drill bit set includes five standard step drill bits which can replace 50 individual drill bits, Two-flute design gives you faster, smoother cutting
- Workable diameters are marked in the drill
- It is very convenient for you to choose workable size
25. Step Drill Kit,Knoweasy 5PCS HSS Titanium Step Drill Bit Set with Automatic Center Punch and Multiple Hole 50 Sizes of High Speed Steel Step Drill Set with Aluminum Case -Step Drill Bits
By knoweasy
- Application:Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron sheet and many other types of sheet metal (excluding steel or any other harder metal
- What you get:Includes five standard step drill bits with center punch,which can replace 50 individual drill bits, you can process 50 different kinds of diameter holes with the five pieces.
- Product GuaranteeYour customer satisfaction and 12 months warranty of step drills can be guaranteed.
- HSS Titanium Coating:High speed steel along with titanium coating ensures outstanding durability and sharpness,can reduces the friction,runs cooler.
- Product Feature:The center punch delivers an automatic,high-impact,spring-loaded strike through adjusting the cap; its brass body has a deeply knurled surface for nonslip control; and the carbide tipped bit makes the center punch 10 times stronger than normal one;protective aluminum case makes the drills not easy to dull.
26. NACHEE 3Pcs Titanium Coated Step Drill Bit Set, HSS Cone Drill Bit with 1/4″ Hex Shank Drive Quick Change （Metric 3-12 mm 4-12 mm 4-20 mm）for DIY Woodworking, Plastic Wood -Step Drill Bits
By NACHEE
- The drill tip adopts a 135°bifurcated tip design, prevents the step drill bit from slipping during operation.
- high-speed steel construction and for longer cutting edge life even at extreme temperatures
- The step drill bit is durable and strong enough to punch and drill clean holes in materials like wood, plastic etc
- Two-flute design, clears chips faster, smooth cutting
- Suitable for hand-held drilling rigs, drilling machines, milling machines, and machining centers, for metal sheet, maintenance, and modification, bridge doors, and windows, home appliances, etc.
- Perfect for home repairs and light jobs such as drilling holes in aluminum, copper, Wood, PVC sheet, Insulation Boards, and many other types of sheet metal.
- A necessity for family or handyman or professionals
- Titanium plating process to reduce friction and heat
- performs well in heat, corrosion, and rust resistance.
- It can also help to enlarge existing holes and clean edges.
27. 5Pcs Step Drill Bit Set, with Automatic Center Punch, High Speed Steel HSS Cone Step Drill Bit Hole Cutter, Blue Coating Triangle Shank Cone Step Drill Bit with Storage Box -Step Drill Bits
By Acogedor
- Widely Application of Step Drill Bit SetSuitable for workpieces with hardness below 25°, such as iron plate, aluminum plate, PV plate, insulation board, etc.Very suitable as a gift for Father’s Day, and suitable for DIY lovers.
- Specification of Drill Bit SetShank: Triangle shank, 3/16-1/2″,1/4-3/4″,1/8-1/2″,3/16-7/8″, 1/4-1-3/8″
- Unique DesignUnique step structure, a single drill bit can drill holes in multiple different sizes.
- Long Service LifeHigh-speed steel construction can extend the life of the cutting edge even under extreme temperatures
- Blue coating enhances drill bits’ resistance to heat, corrosion and rust.
- Multifunctional Stepped Drill BitThis drill bit makes it possible to achieve deburring, chamfering, hole expansion and other functions that twist drill bit cannot complite.
28. 3Pcs HSS Titanium Coated Step Drill Bit Set, 1/4″ Hex Shank Drive Quick Change High Speed Steel Cone Drill Bit for Plastic, Wood, Sheet Metal Hole Drilling (Metric 4-12mm/4-20mm/4-32mm) -Step Drill Bits
By LepoHome
- Easy DrillingTwo-Flute Design for smoother cutting
- More capable and durable.
- Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc.
- MaterialHSS combined with a titanium coating
- 1/4″ Hex shaft drives are suitable for all kinds of for home DIY power drills.
- Widely UsedPerfect Step Drill Bits suitable for drill holes in various material： within 3mm/0.12 inch (Iron Plate, Copper Plate, Aluminum Plate); within 5mm/0.2 inch (Wood, PVC sheet, Insulation Boards)
- Package Included 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm )
- High Step design let you feel the stop and never drill bigger in mistake
- SET INCLUDESBit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm); Bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm); Bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm)
29. Step Drill Bit Set, 5 Pcs 50 Sizes Cobalt Step Drill Bits for Metal, Wood, Plastic Sheet, Stainless Steel Metric Step Drill Bit, Titanium Stepped Drill Bits -Step Drill Bits
By Meanhoo
- Work as step drill bit, cobalt drill bit set, step bit, step drill bits for metal, step drill, metal drill bits, step bits for metal, step drill bit set
- Work for drill step bit, step up bit, cobalt step drill bit, hard metal drill bits, uni bit, step up drill bit
- Use for drill bit step, 2 inch step drill bit, step bit set, step drill set, stepper bit, step bit drill bit, stepped drill bit
- Use as stepped drill bits, step bits, metric step drill bit, step drill bits, step drill bit set 5
- Suit for titanium step drill bit, step down bit, cobalt step bit, step bit for stainless steel, titanium step bit, multi drill bit, step drills
30. MILWAUKEE’S 48-89-9224 Step Bit 6-Piece Set (#1, 4, 6, 7, 8, 9) -Step Drill Bits
By MILWAUKEE’S
- The product is easy to use and easy to handle
- The product is highly durable
- Step Bit 6Pc Set (#1, #4, #6, #7, #8, #9)
31. DEWALT Titanium Drill Bit Set, Pilot Point, 21-Piece (DW1361) -Tools & Home Improvement
By DEWALT
- Patented web taper increases the rigidity of the bit to decrease potential for bit breakage
- Small Bulk Storage size fits inside the Small and Medium ToughCase plus (sold separately) – Ideal for organizing loose bits
- Ideal for metal, wood, and plastic
- Patented bit-bar design of the drill bits set allows easy removal of bits and customizable placement
- DEWALT drill bit set has connectable accessory storage system to optimize storage space
- Proprietary Pilot point tip delivers speed and clear, burr-free holes which help reduce bit walking
- Clear lid of the titanium drill bit set allows you to easily see contents at glance
- Clip latch for secure closing
32. IRWIN Step Drill Bit, 1/8-Inch to 1/2-Inch Step, 1/4-Inch Shank (10231) -Screwdriver Bit Sets
By Irwin Tools
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.
- Each drill acts as a pilot for the next size.
- This product is manufactured in United States
- Each drill acts as a pilot for the next size.
- Drill diameters etched in flute for easy identification.
- This product is easy to use
- Save time because you don’t need to change drills for different-sized round holes in thin materials
- Patented single-flute cutting edge gives greater control through steps and a true round hole every time.
- This product is highly durable
- Speed Point tip penetrates faster than previous Unibits and prevents walking
- 3-faltted hex shank prevents slipping in drill chuck.
- Save time because you don’t need to change drills for different-sized round holes in thin materials
- SpeedPoint tip penetrates faster than previous Unibits and prevents walking
- 3-faltted hex shank prevents slipping in drill chuck.
- Patented single-flute cutting edge gives greater control through steps and a true round hole every time.
- Drill diameters etched in flute for easy identification.
- Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates.
33. Step Drill Bit Set for Metal – JelBo 1/4inch High Speed Steel Titanium Coated Metric Straight Groove Step Drill Bits Set, Hex Shank Hss Cone Uni Bit Kit for Hole Wood(3Pcs/Set 3-12/4-12/4-20mm) -Screwdriver Bit Sets
By jelbo
- Step drill bit can be used with electric hand drill
- It uses magnets to make buttons, even if it is stored with one hand, there is no problem
- MULTI-PURPOSEOne step drill bit can punch holes of different sizes and the material is hard, to meet your various needs at work.
- MORE CONVENIENT STORAGEThe step drill bit set is equipped with a storage bag made of wear-resistant 600D Oxford cloth
- With the sharp increase in the size of the next step, the cutting becomes faster, effectively saving your time and energy.
- Do you really not buy such a special step drill set?
- Can be used for punching iron and wood within 3mm
- PRECISION DESIGNThe drill tip adopts a 135°bifurcated tip design, which not only increases the cutting speed, but also prevents the step drill bit from slipping during operation
- Use together, work easier.
- The step drill bit is made of high-speed steel material and the titanium plating process is used to make the life longer.
- WIDELY USEDIt is suitable for DIY production, woodwork, workshop processing and other purposes
- HIGH-END MATERIALSVarious diameter specifications can replace multiple twist drills
34. amoolo Titanium Step Drill Bit Set (3Pcs), Total 28 Sizes High Speed Steel (HSS) 1/4″ Hex Shank Unibit for Soft Metal Sheet, Wood, Plastic, Multiple Hole Drilling Cone Bit Set -Screwdriver Bit Sets
By amoolo
- 135° X-TYPE SPLIT POINT – Increases cutting speed with self-centering and prevents walking.
- The titanium coating reduces friction and cools faster, giving longer using life
- STEP BITS WITH MULTIPLE DRILL SIZES – 3Pcs-28 STEP SIZES – Bit #1 (6 Steps): 3/16″, 1/4″, 5/16″, 3/8″, 7/16″, 1/2″; Bit #2 (9 Steps): 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″.Bit #3 (13 Steps): 1/8″, 5/32″, 3/16″, 7/32″, 1/4″, 9/32″, 5/16″, 11/32″, 3/8″, 13/32″, 7/16″, 15/32″, 1/2″
- No need of 28 seperate drill bits, saves great amount of money and troubles
- 1/4″ HEX-SHANK QUICK CHANGE – Fits into most pistol drill and drill press securely without slippage when drilling new holes or enlarging existing holes.
- Suitable for Home DIY, General Building and Engineering Use.
- TWO-FLUTE DESIGN – Double cutting blades design guarantees a faster and smoother cutting, allows particles escape easily.
- Free to get a portable tin box to prevent rust.
- Prefect for Soft Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets
- TITANIUM | HIGH SPEED STEEL – Industrial grade high speed steel ensures excellent durability and strong wear-resistance
35. Neiko 10194A Titanium Step Drill Bit, High Speed Steel | 1/4″ to 1-3/8″ | Total 10 Step Sizes -Screwdriver Bit Sets
By Neiko
- CUTS AND DEBURRS: Cuts through steel, sheet metal and other surfaces with only a small amount of pressure and deburrs as you drill
- VERSATILE AND FAST: 3/8″ 3-flat shank prevents slippage when drilling new holes or enlarging existing holes
- 2-FLUTE DESIGN: Titanium-coated bit with 2-flute design for versatile drilling in steel, stainless steel, copper, aluminum, and other surfaces
- MULTIPLE DRILL SIZES WITH ONE BIT: 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8-inch
- SUPER STRONG: Made of high speed steel and titanium coated for added durability and bit life
36. CO-Z Large HSS Spiral Groove Step Drill Bit, 12 Sizes Titanium High Speed Steel 1/4″ to 2-3/8″ Drill Bit for Sheet Aluminium Metal Wood Hole Drilling, Big Multiple Hole Stepped Up Bit for DIY Lovers -Screwdriver Bit Sets
By CO-Z
- The titanium coating makes the drill bit more durable so that it can last for years with uncompromised quality.
- 12 hole sizes: 1/4; 3/8; 19/32; 3/4; 1′; 1’3/16; 1’3/8; 1’5/8; 1’3/4; 2′; 2’3/16; 2’3/8.
- The dual-flute design prevents metal fillings from flying around and clears chips faster thus it can drill more smoothly without heating up.
- Our drill bit is bigger in size so it can drill holes with larger dimensions.
- The rapid strike tip drills twice as fast as the average step drills and can drill acrylic, PVC, wood, aluminum and iron sheets up to 0.2’’ in thickness.
- The step drill bit is made from upgraded high speed steel characterized by well-balanced toughness, wear resistance and red hardness properties for better and faster hole -drilling performance
37. JelBo Automatic Center Punch and Spiral Step Drill Bit Set, Adjustable Auto Center Punch with Hex Shank Step Drill Bit for Wood, Metal (4Pcs/Set) -Screwdriver Bit Sets
By jelbo
- MORE SLIP RESISTANTAccording to the ergonomics, the non-slip diamond pattern design is adopted, which can increase the friction between the hand and the spring loaded center punch handle during operation, so that it is easier to maintain vertical to the workpiece, and it is easier to force the positioning hole.
- Spiral step drill bit used with spring loaded center punch.Use together, work easier.
- Compared with the conventional center punch, the spring loaded center punch does not need a hammer to strike, but uses the internal spring to generate impact for positioning, which is more convenient and durable.
- HIGH-END MATERIALSIts thimble hardness reaches 58°-65°
- Can be used for punching iron and wood within 3mm
- WIDELY USEDIt is suitable for DIY production, woodwork, workshop processing and other purposes
- PRECISION DESIGNThe drill tip adopts a 135°bifurcated tip design, which not only increases the cutting speed, but also prevents the spiral step drill bit from slipping during operation
- EFFICIENT OPERATIONSpiral step drill bit has good chip removal effect and hard material, fast cutting speed, strong practicability.
- With the sharp increase in the size of the next step, the cutting becomes faster, effectively saving your time and energy.
38. Drill Hog 37 Pc Cobalt Drill Bit Set Index M42 1/16″ – 1″ USA -Screwdriver Bit Sets
By Drill Hog
- Made by Drill Hog USA
- 1/16″ to 1/2″ by 64ths
- Jumbo Sizes 9/16 to 1″ by 1/8ths
- Cobalt M42 Steel
- Lifetime Warranty
39. KOWOOD HSS Step Drill Bits & Automatic Center Punch 6 Pcs Set with Titanium Coated. Portable case Step Drill bits Set -Screwdriver Bit Sets
By KOWOOD
- Compatibility-Triangular shank step drill bits is compatible with all mainstream pressure drills and drill bits.
- Accuracy-118-degree opening design, effectively reducing slippage during use, and accurately forming holes.
- Durability-The appearance of the KOWOOD step drill is coated with titanium, which can better extend the service life and increase the use time of the tool with you.
- Preferentiality-Choose this step drills to enjoy a preferential price, and the supporting packaging can be better placed and transported.
- Functionality-Five sizes, step drills can replace 50 types of drills, and drill holes of more sizes, which can not only meet the splicing of furniture in daily life, but also be suitable for professional construction steel processing.
40. set of 3 HSS6542 M2 Steel Spiral Groove Step Drill Bit Set for Stainless Steel Metal Wood Hole -Industrial & Scientific
By Preamer
- Meet Your Demands – With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal wood plastic countersunk
- Suitable for Home DIY, and General Building Engineering Use.
- 4mm to 32mm 15 Steps ,4mm to 12mm 9 Steps .4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm)
- Suit for use in hardness under 28 artifacts,(Such as: Stainless steel , iron plate, aluminum, wood )
- You can use water to cooling it when it is work and it can be used for even longer
- M2 High speed steel makes it last longer than others, ensures easily cut through stainless steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean.
41. NACHEE 3Pcs Titanium Coated Step Drill Bit Set, HSS Cone Drill Bit with 1/4″ Hex Shank Drive Quick Change （Metric 4-12 mm 4-20 mm 4-32 mm）for DIY Woodworking, Metal, Plastic Wood -Industrial & Scientific
By NACHEE
- high-speed steel construction and for longer cutting edge life even at extreme temperatures
- It can also help to enlarge existing holes and clean edges.
- Two-flute design, clears chips faster, smooth cutting
- A necessity for family or handyman or professionals
- performs well in heat, corrosion, and rust resistance.
- The step drill bit is durable and strong enough to punch and drill clean holes in materials like metal, wood, etc
- The drill tip adopts a 135°bifurcated tip design, prevents the step drill bit from slipping during operation.
- Perfect for home repairs and light jobs such as drilling holes in aluminum, copper, Wood, PVC sheet, Insulation Boards, and many other types of sheet metal.
- Suitable for hand-held drilling rigs, drilling machines, milling machines, and machining centers, for metal sheet, maintenance, and modification, bridge doors, and windows, home appliances, etc.
- Titanium plating process to reduce friction and heat
42. Step Drill Bit Set – Titanium Coated, High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers,3pcs -Industrial & Scientific
By Aimeiya
- Suitable for home DIY, and general building/ engineering use.t slippage and shedding during the rotation.
- TRI-FLATTED SHANK Each unibit step drill bit optimally fits into power tools such as impact drill chucks securely and eliminates slip for higher efficiency of output.
- DOUBLE CUTTING BLADES DESIGNThe HSS step drill bit set is designed with double cutting blades, which provides faster, smoother and accurate drilling.
- Bit #1 (6 steps): 3/16″, 1/4″, 5/16″, 3/8″, 7/16″, 1/2″; Bit #2 (13 steps): 1/8″, 5/32″, 3/16″, 7/32″, 1/4″, 9/32″, 5/16″, 11/32″, 3/8″, 13/32″, 7/16″, 15/32″, 1/2″; Bit #3 (9 steps): 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″
- QUILITY STEP DRILL BITS The step drill bits are made of classic high-speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, wood board, copper, stainless steel and many other types of sheet metal.
- WELL PERFORMED The multiple hole drill bit set include 28 size, which can cuts through steel, sheet metal, wood board and other surfaces creating relatively clean holes as you drill
- If you are not fully satisfied with the step bit for any reason, please contact us for 100% refund or replacement.
- SET INCLUDESThe cone drill bits set includes 3 common sizes for versatility
43. HSS Titanium-Coated Spiral Groove Step Drill 4-Piece Set with Automatic Center Punch, 1/4″ Hexagon Shank Drill bit, for Plastic, Wood, Metal, Multi-Hole Taper Drill bit Set -Industrial & Scientific
By KPN
- [Wide Application:]Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron sheet and many other types of sheet metal (excluding steel or any other harder metal.
- They can process different kinds of diameter holes, which greatly saves you a lot of trouble.
- [Quality Material:]HSS 4241 & classic high speed steel with titanium coating for strength and longevity
- Coated by titanium,this step drill set performs well in heat,corrosion and rust resistance.
- [Easy Drilling] Two-fluted design provides faster, smoother cutting, provided with small pressure and the sets
- Stepped grooves prevent slippage in the chuck.
- [Package] 4-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ) + 1 Automatic Center Punch.
- [ Various Specifications]The titanium coated step drill bit set has 28 different apertures
44. IRWIN Drill Bit Set, M35 Cobalt Steel, 29-Piece (3018002) -Tools & Home Improvement
By Irwin Tools
- 5% Cobalt For Higher Heat & Abrasion Resistance
- Heavy Duty Web Construction For Strength & Durability
- Cobalt Drill Bit Set
- 29 Piece
- Sizes 1/16 inch -1/2 inch in 1/64 inch increments, 135 Degree Split Point To Minimize Walk
45. QWORK 3 Pcs Titanium Step Drill Bit Set, High Speed Steel, 1/8″ – 3/4″ Total 28 Sizes, HSS Multiple Hole Drilling Cutting with Storage Bag -Industrial & Scientific
By QWORK
- 5) 1/4″ hex shank (6.35mm)can be easily fit into power driver, drill and press drill
- 2) Made of high quality high speed steel that is hard and sharp enough to drill through wood, plastic, steel and sheet metal
- 4) Two-flute design provides faster, smoother and accurate cutting
- 3) Titanium coated surface can reduce friction and overheat when drilling through material for longer life time
- One 3/16-inch to 1/2-inch six-step bit, 1/4-inch to 3/4-inch nine-step bit, and 1/8-inch to 1/2-inch 13-step bit(detailed hole size and drill depth of each drill bit please check in Product description below)
- 1) 3 standard SAE step drill bits can drill 28 different size of holes on different thickness of materials
46. Welpettie 7pcs Titanium Step Drill Bits Set for Soft Metal, Wood, Plastic Sheet Steel Step Drill Bit with Automatic Center Punch Twist Drill and Aluminum Case Multiple Hole Stepped Up Bits -Industrial & Scientific
By Welpettie
- CONVENIENT AND FAST: The step drill bit group provides faster and more convenient drilling than the single-edged drill bit
- WHAT YOU GET: Includes 5pcs standard step drill bits with 1 pc center punch 1 pc twist drill, which can replace 50 individual drill bits, you can process 50 different kinds of diameter holes with the five pieces.
- HIGH QUALITY:This Step Drill Bit Set is a new type of HSS steel large step cone drill titanium drill sizing hole cutter made of high-quality HSS steel, it is coated with titanium to reduce friction and heat.
- Easy-to-read step marks and targets save drilling time, and the smoothness of the hole edges prevents metal shavings from flying around to improve safety.
- It can hold 50 sizes at a time, and can drill holes of various sizes at one time, thus saving your time and energy to switch between drill bits.
- The aluminum protective shell can prevent the drill bit from becoming dull and extend the life of the drill bit
- WIDELY APPLICATION:Our step drills can be used for chamfering, drilling and reaming thin iron, plastic, wood and composite boards
- UNIQUE DESIGN: Compared with traditional drills, the impact is minimal and it is almost impossible to break
- Suitable for home DIY, and general construction/engineering use.
47. Drill Hog USA 1/4″ to 1-3/8″ Cobalt M42 Step Drill Bit Set Spiral Flute -Industrial & Scientific
By Drill Hog
- 10 Step Sizes: 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″, 1-1/8″, 1-1/4″, 1-3/8″
- New Spiral Flute Design Cuts Faster 33% and Straighter
- Two Flute Design Automatically Deburrs While you Drill
- Drill Hog USA 1/4″ to 1-3/8″ Cobalt M42 Step Drill Bit Set Spiral Flute
- Lifetime Warranty
48. MILWAUKEE SHOCKWAVE Impact Duty St -Industrial & Scientific
By MILWAUKEE’S
- – 1/2 in
- Rapid strike tip provides fast and accurate starts A dual spiral flute combined with the rapid strike tip delivers up to 2x faster holes than competitive impact step bi
- (48-89-9244), (1) SHOCKWAVE impact duty step bit #9 7/8 in
- Optimized SHOCKZONE reduces early shank breaks, Laser engraving for clear stop on size identification
- (48-89-9241), (1) SHOCKWAVE impact duty step bit #4 3/16 in
- (48-89-9249)
- Optimized for impact drivers, drill/driver compatible Titanium Aluminum Nitride (TiAlN) coating delivers 5x longer life than competitive impact step bits
- Includes: (1) SHOCKWAVE impact duty step bit #1 1/8 in
- Milwaukee SHOCKWAVE impact duty electrical step drill bit kit is optimized for impact drivers, drill/driver compatible, give 5X longer life, 2X faster holes
- and 1-1/8 in
- – 7/8 in
Step drill bit set – The Buyer’s Guide
You must have checked the above list, aren’t you mind-blown by the quality of products? Well, if you are then here’s a secret formula which we’ve used to choose them. You can use them too! The best part is, it works for all the product purchases you make! Besides, wouldn’t it be helpful to you, if you knew the factors we’ve considered to choose the step drill bit set in the above list? So shall we begin with the guide and help you learn about the important factors?
1. Does it have the features you need?
Wait for a minute before you buy the step drill bit set, check if it has all the features in your requirement list! If it doesn’t have them, then you should avoid buying that particular model and start looking for an alternative. We always suggest our editors to make a list of important features before adding a product to a list and based on the feature, the quality of the product, brand-assurance, rank it! So if it has all you need, you should not mind paying a bit extra. However, if you end up buying the best step drill bit set which doesn’t have the feature you need the most, then it won’t make sense! Would it? To us, it wouldn’t! That’s why you should make up a list which includes the features you are looking for, technical specifications if any, etc and come up with a budget.
2. Budget and Price Match
Well, you obviously can’t buy the best step drill bit set with a low budget. That’s why it’s important to make note of all the important features, specs, factors and come up with a budget. Once you are ready with it, look for the products which are either equal to your budget or are close to it. Stick to the budget, because while browsing, you’ll see a model which is slightly better and has an additional feature with a really small price difference. Well, in that case you’ll have to calculate the price of the product which has all the required features and the step drill bit set with the additional features. See if the difference in amount is worth for the feature? If you don’t have second thoughts, you shall probably increase your budget.
3. Warranty and Brand
Most of the step drill bit set industry experts we got in touch suggested us to always buy the one which comes from a reputable brand. They also explicitly asked us to include the best brands so that users don’t buy the models from unknown brands or non-reputable companies. Because step drill bit set from an unknown brand might be cheap at first glance, but could have high-maintenance and could cost a lot in repairs.
Another benefit of buying a step drill bit set from a reputable brand would be warranty. Most of the step drill bit set from reputable brands come with good warranty. However, cheap products do come with a warranty, but claiming it can be a herculean task. That’s why buy the models which come from known brands and have good warranty.
4. Check for Reviews and Ratings
Back then when the Internet wasn’t as big as it is today, local stores charged high and even ended up selling the products which sucked or wasn’t future proof. It’s because the salesman threw technical terms and confused the buyer. But nowadays, there are sites like ours which does all the research and lists down the best models and there are eCommerce stores like Amazon which has user reviews which can be read to know the experience of the user with that particular step drill bit set. Isn’t it great?
The Verdict
We hope that you loved the step drill bit set we’ve listed in our best list. If it has been helpful, please bookmark our website and share it with people you know whenever they plan to buy something.
To wrap up this guide,
- If you are looking for the best step drill bit set: You shall consider going for Drill Hog 37 Pc Cobalt Drill Bit Set Index M42 1/16″ – 1″ USA
- If you want the one which has similar features to the best, then you shall consider going for MILWAUKEE’S 48-89-9224 Step Bit 6-Piece Set (#1, 4, 6, 7, 8, 9)
- If you want a step drill bit set which is “value for money” then you shall go for the Klein Tools KTSB15 Step Drill Bit #15 Double Fluted 7/8 to 1-3/8-Inch
- If you want the cheapest step drill bit set then the Step Drill Bit Set – Titanium Coated, High Speed Steel Drill Cone Bits for Sheet Metal Hole Drilling Cutting, HSS Multi Size Hole Stepped Up Unibit for DIY Lovers,3pcs should be the best one for your needs!
