C k ratchet crimp plier solar pv ck tools t3671 designed for the safe and secure crimping of mc3 and mc4 solar pv connectors to wire sized between 2 5 and 6mm2 featuring heavy duty body construction with hardened steel jaws guaranteed for up to 30 000 cycles factory set crimp pressures for the optimum connection safety full cycle ratchet mechanism for safe repeatable results and comfortable ergonomic handles ck tools t3671 ratchet crimp plier solar pv