Rhino Tool's Ratchet Quick Change Crimper with A die for insulated terminalsColor coded for fast and easy crimping of red, blue and yellow insulated terminalsRed insulated terminals are for 22-18 AWG wire (0.5 - 1mm²)Blue insulated terminals are for 16-14 AWG wire (1.5-2.5mm²)Yellow insulated terminals are for 12-10 AWG wire (4-6mm²)AISI 4140 DIESAISI 4140 is a chromium-molybdenum alloy steel. The chromium content provides good hardness penetration, and the molybdenum content ensures uniform hardness and high strength. The dies are heat treated (HRC43°~45°) and have a zinc phosphate surface treatmentAny other Quick Change dies can be used with this crimping tool. More than 30 different dies are availableNo tools required. The dies can be replaced in 5 seconds. Slide in, slide outPatented in USA, Germany, China, Taiwan