Versatile electronics Network tools Crimp Tool lets you cut, strip and crimp Ethernet and telephone cable. Compatible with all RJ45 CAT6 connectors (including shielded), RJ45 CAT5E connectors, and RJ11/12 connectors (not AMP). Also suitable for wire installation into network and compatible telecommunication equipment. Zero flex frame prevents torque loss during the crimping cycle,Textured handle grips reduce hand fatigue and prevent slipping during cutting, stripping and crimping, In addition to crimping capabilities it also cuts and strips wires, giving you essentially 3 tools in one. There is also a ratchet safety release and a blade guard.