INSTRUCTIONS BEFORE CUTTING OR STRIPPING WIRE BE SURE ALL POWER IN CIRCUIT IS DISCONNECTED. U.S, PATENT NO. 4.366.730 THIS TOOL IS NOT DESIGNED TO STRIP TEFLON OR SIMILAR INSULATION 1. To trim wire using built-in cutter, place wire between cutler blades and close handles fully resulting in a square trim cut. 2. Clamp prepared wire between front jaws, using millimeter or inch scales as reference for length to be stripped. 3. Squeeze handles.