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Black ratcheting modular crimper stripper tool with yellow handles, 6.5 by 3.5 by 1.5 inches

Klein Tools 406 Ratcheting Modular Crimper Stripper electrician tool

SKU CH-KFK2-HP7R2 MPN 406

All-in-one ratcheting tool cuts, strips and crimps paired-conductor cables for RJ22, RJ11/RJ12 and RJ45 connectors

  • Total capacityYellow/Black
  • Maximum amperageCrimper, Data Ratcheting RJ45
  • Hole size nominal52767, 406
  • Style/shapeCrimper, Data Ratcheting RJ45
  • Pin count1
  • Maximum capacity mild steelYellow/Black
  • All-in-one tool cuts, strips and crimps paired-conductor cables
  • Crimps 4, 6 and 8 position modular connectors RJ22 RJ11 RJ12 RJ45
  • Ratchet safety-release and blade-guard reduce risk of injury
  • Precision ground high-carbon steel dies for reliable crimps
  • 160 years American manufacturing expertise since 1857

All-in-One Voice and Data Tool

The Klein Tools 406 Ratcheting Modular Crimper Stripper is a single hand tool that cuts, strips, and crimps paired-conductor cables. It handles round shielded and unshielded twisted-pair cables as well as flat-satin phone cables. The tool is built for electricians and installers who need fast, reliable modular-crimp connector installation for voice and data applications.

Crimps RJ22, RJ11, RJ12, and RJ45

Precision-ground high-carbon steel dies crimp 4, 6, and 8 position modular connectors covering RJ22, RJ11/RJ12, and RJ45 Cat5e/Cat6 plugs. The ratchet mechanism ensures a complete crimp cycle every time and includes a safety release. It does not work with pass-through connectors or Cat7 and Cat8 plugs, so installers using those standards will need a different tool.

Compact Steel Build with Blade Guard

The black oxide finished steel frame measures 6.5 in x 3.5 in x 1.5 in for easy pocket or pouch carry. A built-in blade guard on the cutting and stripping knives reduces the risk of injury during transport and use. The tool requires standard modular plugs and proper cable preparation with full conductor insertion for best results, freeing the user from carrying separate cutters, strippers, and crimp frames.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $44.99
Cheaper than about 80% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameKlein Tools
Model name406
Part number52767
Total capacityYellow/Black
Color and finishBlack
Size & build
Size or dimensions6.5 in × 3.5 in × 1.5 in
Hole size nominal52767, 406
More details
Maximum amperageCrimper, Data Ratcheting RJ45
Style/shapeCrimper, Data Ratcheting RJ45
Pin count1
Maximum capacity mild steelYellow/Black

Questions about this item

Will the 406 crimper work with the RJ45 Cat5e connectors I already have?

Yes, the tool crimps 8-position RJ45 connectors for Cat5e and Cat6 cables, so your existing standard modular plugs are compatible.

How can I verify the ratchet mechanism is engaging correctly on the 406?

Squeeze the handles until the ratchet releases automatically; a complete cycle confirms the dies have fully bottomed out for a proper crimp.

Does the 406 include any modular plugs or do I buy them separately?

The package contains only the crimper/stripper tool itself; RJ22, RJ11/RJ12, and RJ45 connectors must be purchased separately.

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