CRIMP RANGE - 23-7AWG ( 0.25 mm²-10mm²) Square Crimping for insulated and uninsulated sleeve terminals, wire ferrules and end sleeves.. SQUARE CRIMP SURFACE - With 4 synchronously driven crimp claws forming 4 serrated crimp surfaces!. LABOR-SAVING - Ratchet mechanism that automatically adjusts to the proper crimping range for crimping terminals every time you use it. The process is very smooth!. ERGONOMIC - The anti-skid handle makes it easier for you to use this tool.. FULL RATCHET CYCLE - Ensuring crimp quality, the safety crimp release trigger helps eliminate crimp jams caused by incorrect positioning.