Pro'skit 8PK-313B Heavy Duty Wire Stripper Crmiper and Cable Cutter 3-in-1 Multi Tools for Electrical Wiring (Metric) Suitable for crimping 1.5-6mm( red, blue and yellow) insulated terminals. Also used in the tool is a wire cutter , wire stripper, bolt cutter and position for crimping ignition terminals Stripper: mm2: 6.0, 4.0, 2.5, 1.5, 1.0, 0.75 Bolt cutter: M2.6,M3, M3.5, M4, M5 Wire Crimper: Insulation: 1.5, 2.5, 6mm2. Non-Insulation: 1.5, 2.5, 4~6mm2 Made of SAE1008 tool steel. Cutting edge HRC:HV 450~800