The best Ethernet cable repair kit is one whose plugs actually fit your cable. For replacing an RJ45 plug, the Platinum Tools 90187 offers three documented connector sizes; the Klein Tools VDV026-813 adds a basic wiring tester to a smaller connector assortment. Neither is a complete solution for every damaged cable.
These are termination kits for fitting new plugs to suitable twisted-pair cable. For a damaged, readily replaceable patch lead, buying a new cable is usually the simpler choice. For installed cable, first establish whether the fault is at a plug, a wall jack or somewhere along the run. A plug crimper does not replace a punchdown tool for a compatible wall jack.
Which kit should you buy?
| Kit | Best fit | Included essentials | Main limitation |
|---|---|---|---|
| Platinum Tools 90187 ezEX-RJ45 Termination Kit | Buyers who already have cutting, stripping and testing tools | EXO frame and EXO-EX die; 125 plugs across three sizes; case | No tester or cable-preparation tools; included plugs are unshielded |
| Klein Tools VDV026-813 Cable Installation Kit for Pass-Thru | Buyers who want a crimper and basic wiring check together | Compact Pass-Thru crimper; LAN Explorer tester; 50 plugs; pouch | Separate cable-preparation tools needed; confirm plug dimensions before ordering |
1. Platinum Tools 90187: best for a choice of connector sizes
The 90187 is the stronger choice when you need to match plugs to measured cable dimensions. Its clear case contains the 100061C EXO Crimp Frame with EXO-EX Die, 50 ezEX38 plugs, 50 ezEX44 plugs and 25 ezEX48 plugs. The plugs have a pass-through design with staggered conductor positions. The case has removable inserts for tools you already own; a cutter, stripper and tester are not in the listed contents.
The manufacturer’s kit specification covers solid or stranded 24–22 AWG conductors, but wire gauge alone is not a fit check. The 90187 instructions give these insulation-diameter ranges:
- ezEX38: 0.033–0.038 inch, for Cat5e and smaller Cat6 constructions
- ezEX44: 0.039–0.044 inch, for Cat6 and smaller Cat6A constructions
- ezEX48: 0.043–0.048 inch, for Cat6A and larger Cat6 constructions
All three included unshielded plug sizes have a maximum cable-jacket diameter of 0.290 inch. Measure the insulated conductor as well as the outer jacket; a Cat6 label alone does not tell you which plug fits. Shielded ezEX plugs are separate products, and their grounding and size requirements need a separate check.
Buy it if: you want an organized plug assortment with documented dimensions and already own the remaining tools. Skip it if: you need a tester in the box or a ready-to-use shielded termination kit. The supplied EXO-EX die is for ezEX connectors; do not assume it works with original EZ-RJ45 plugs or another brand’s pass-through plugs.
See the Platinum Tools 90187 kit and buying options
2. Klein Tools VDV026-813: best with a basic wiring tester
This kit combines the VDV226-005 compact Pass-Thru crimper, VDV526-100 LAN Explorer tester, a pack of 50 CAT5e/CAT6 Pass-Thru connectors and a zippered pouch. Its appeal is the ability to fit a compatible plug and then check the cable’s wiring with the included tester. The compact crimper crimps and trims; budget for appropriate cable-cutting and jacket-stripping tools separately.
Klein specifies solid or stranded cable and an 8-position, 8-contact pass-through plug. The VDV226-005 instructions name compatible Klein connector models and explicitly exclude standard, closed-end connectors. The tool’s round STP/UTP cable description does not establish a shield connection through the supplied clear plugs. For shielded cable, obtain confirmation of the exact shielded plug and crimper combination.
Check before buying: the cited kit page and crimper instructions do not publish a numeric wire-gauge or insulated-conductor-diameter range for the supplied plugs. Confirm those limits with Klein for your cable. Do not substitute a gauge range from a different Klein tool, or assume that this kit’s plugs fit Cat6A because the tester can check its wiring.
The LAN Explorer reports wiring faults such as opens, shorts and miswires, with a shield indicator. Its manual specifies a maximum test length of 1,000 feet and a minimum of 1.5 feet for split-pair detection. Those are tester limits, not permitted Ethernet run lengths. A passing result does not certify Cat6 performance, prove an Ethernet speed or validate PoE power delivery.
Buy it if: you want one pouch for plug termination and basic fault checking after confirming cable compatibility. Skip it if: you need documented bandwidth certification or a kit that includes every preparation tool.
See the Klein Tools VDV026-813 kit and buying options
What matters more than the number of pieces
Match the entire connection. Check the cable category, solid or stranded conductors, AWG, insulated-conductor diameter, jacket diameter and shielding. Then match the plug family to the exact tool and die. “RJ45” and “pass-through” are not universal compatibility guarantees.
Choose the right kind of test. A wiremap tester checks connections. A qualification tester evaluates support for particular applications, while a certification tester measures against cabling standards. Fluke Networks explains these different test levels. Where a job requires certified performance, neither kit replaces the required certification equipment.
Keep the cable unpowered. Disconnect it from equipment and any PoE source before cutting, terminating or using these basic test tools. Klein specifies unpowered cable systems for the LAN Explorer. A connector’s PoE suitability is not permission to repair an energized cable. Follow the exact tool and connector instructions, and have damaged installed or inaccessible cabling assessed before deciding that a new plug is the right repair.
