Six-sided zigzag crimping to make crimping firmer. Each kit comes with A handy ferrule crimping plier with 1900pcs wire ferrules. (Specific specifications are displayed on the details page) Ergonomic Handle Design provides improved gripping power. Adjustable Ratchet and Lever Action Construction reduces fatigue degree. For insulated and non-insulated cable lugs + 1, 900 cable end lugs. For pressing ferrules supplied from side 0.25 -6mm²(AWG: 23 ~ 10). If the sleeve is not tightened, you can adjust the pressure ratchet. High quality crimping standard ensures repeatable crimping action. Quick release safety lock. Can be unlocked, always maintain the quality of high-pressure connection crimp pressure is accurately calibrated at the factory.