Hardened steel crimping tool for DIY and professional use. Integral wire cutter and stripper. Handle locking function. Compatible with RJ11 6P4C, RJ12 6P6C, RJ45 8P8C and 8P6C connector plugs. Hardened steel crimping tool for DIY and professional use. Integral wire cutter and stripper. Handle locking function. Compatible with RJ11 6P4C, RJ12 6P6C, RJ45 8P8C and 8P6C connector plugs.