【Waterproof and Insulating】The waterproof heat shrink terminal has a polyolefin tube on the outside, an anti-corrosion tin ring and a waterproof hot melt adhesive on the inside. The double-walled design provides good insulation and water resistance on the outside, leaving the internal conductivity unchanged【Multiple sizes】4 colors correspond to 4 sizes of solder heat shrink terminals in DIY. The transparent tubes can also help us in internal control. Note: the black tube is a heat shrink tube, it is not waterproof and is used for easy connection of cables【Strong connection】 Solder and hot melt adhesive have good tensile strength and tear resistance. After heating and cooling, the wires will not slide out of the heat shrinkable terminal【Connection Tips】1: It is different from crimp terminals, no need for crimping pliers, just use a heat gun to heat the tin heat shrinkable tube directly. 2: Since the heating time of the solder is longer than that of the transparent heat shrinkable hot melt adhesive, it is recommended to cover both ends with a heat shield when heating the solder to prevent the solder from burning before melting【Widely Used】The heat shrinkable sleeve is easy to use and can be used in household appliances, vehicles, ships, aircraft and other scenes. It can be used anywhere where a wire connection is required