C k ratchet crimping pliers for boot lace ferrules 0 25 6mm ck tools 430029 designed for the safe and secure crimping of boot lace ferrules to wire sized between 0 25 and 6mm2 the c k ratchet crimping pliers feature 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 430029 ratchet crimping