100Pcs Heat Shrink Butt Connectors, Insulated Electrical Splice Terminals, Waterproof Solder Seal Wire Connectors for Marine Automotive

Step to Use: 1. Insert the two wires to the splice barrel. 2. Crimp the metal part in the middle of the tinned copper barrel with the tool for insulated connectors 3. Heat evenly by rotaing the connector with a professinal heat gun to make it tighten up the wire. Specifications: Tube Shrink Ratio: 3:1 Tube Material: Polyolefin Inner Barrel Material: Tinned red copper Operating temperature: from -67?to 257?(from -55? to 125?) Minimum shrink temperature: 176?(80?) Full recovery temperature: 265?(130?) Package Included: 100 x Blue Heat Shrink Wire Connectors: Cable cross-section 1.5-2.5mm². (A.W.G.:16-14) Note: For best result, please use a hot air gun and rotate the connector to evenly apply heat. Please raise the temperature from low to high gradually when you use the hot air gun to heat the wire connector.