Crimp Size Range16-4 square jaw wire crimping to make crimping firmer. Suit for premium ferrule terminals 0.08 -16mm² (28-5AWG), ensuring crimping precision.. Practical Tools Automatically adjust itself to the appropriate diameter for crimping terminals, which can improve accuracy and reliability during crimping to avoid wasting terminals, the non-slip nylon handle is designed for providing you with easy operation and sturdy crimps.. Forced LockCan not be unlocked, always maintain the quality of high-pressure connection. crimp pressure is accurately calibrated at the factory.