RJ11/RJ12/RJ45 Ratchet Modular Crimp Tool Ratchet Modular Crimp Tool A professional quality ratcheted data & telephone tool designed for precision termination of phone and data (Category 5) cabling. Cuts, strips & crimps flat phone and round UTP/STP cable (including 4-pair Cat 3, 5, 5e). Use on standard RJ11/12 and RJ45 WE/SS-Style Plugs. Features: Includes built-in cable cutter and stripper Heat-Treated carbon steel frame for repeated use durability. Safety blade guard Ratchet Mechanism for easier assembly of modular plugs