The Simply45 S45-C110 Installer Series Dual Cavity Crimp Tool is designed to terminate both standard and pass-through RJ45 and RJ11/12 connectors with accuracy and ease. Features include easy blade replacement, push button security lock, parallel action for precise pin placement, and an ergonomic grip that reduces hand fatigue - all with a lifetime warranty. Perfect for cable installation professionals. Color wire chart for T568A/B and RJ11/12