●Strong Conductivity:Made of high quality copper, Wire Connectors provide strong conductivity. ●Waterproof:To ensure waterproof, the inner wall of shrink tubing has enough hot melt adhesive. When heated, the Heat Shrink Tubing seals to the end of the barrel. ●Durability:To hold the wire tight when crimped, each Heat Shrink Wire Connectors features a strong copper barrel. Translucent Heat Shrink Tubing provides high tensile strength and resistance to stretch and reduces mechanical damage to minimize. ●Easy to Use:Strip the wire insulation, crimp the ring terminals barrel, heat with a hot air gun. The operation is safe and simple. All of the process can be finished in less than a few seconds. ●Wide Applications:Wire Terminals can be widely used in vehicle, watercraft, electronics, motorcycle stereo, equipment switches etc.