[High Quality Material] The Wire Connector Is Made Of Tinned Copper Core And Pp Insulation Material. The Base Pantograph Is Real Tinned Copper To Achieve Maximum Conductivity And Strongest Ripple.[Safe And Fast] The T-Connector Is A Fully Insulated Quick Connector, Which Can Be Terminated And Then Connected To A Quick Connector Fully Isolated. These Self-Stripping T-Tap Electrical Connector Connectors Allow Quick, Easy And Reliable Insertion Of Existing Cables.[Easy To Use] Use These Self-Stripping Electrical Connectors To Pick Up Electricity Mid-Span, Without Cut Or Strip, No Stripping Or Twisting, And No Special Tools Required.[Widely Used] Homes, Workshops, Garages, Factories, Etc. It Helps To Solve All Connection And Maintenance Work. The Best Choice For Electricians, Technicians, Home Users, Hobbyists And Beginners.[Various Colors] Color-Coded Tubes Can Easily Determine The Correct Connector Size For Each Application: 0.5-1.0 Mm / 22-16 Awg (Red); 0.75-2.5Mm / 16-14 Awg (Blue); 2.5- 4.0 Mm / 12-10 Awg (Yellow).