Crimping Range: AWG 28-18 (0.08-0.5/0.25/0.5/1.0mm2) The components of the ratchet crimping are made of special steel Wire Electrical Discharge Machining Cutting jaws with perfect polishing Compatible with XH2.54/Dupont2.54/2.8/3.0/3.96/4.8/KF2510/JST Terminal Precise crimping die sets and integral lock with self releasing mechanism ensure high-quality crimping effect after crimping repeatedly