DescriptionAn easy one step connection of wires that is soldered, insulated and sealed. It's use in marine and automobile applications. Polyolefin tubing in outside and hot melt adhesive in inside. It features with solder and seal and with advanced waterproof function. Polyolefin heat shrink butt connectors improved pullout strength, and provides seal, strain relief, cable check, and insulation.Features- Color: Shown in the pictures. - Material: Copper. - Size: 4 x 0.8 x 0.8cm. - Package Size: 7 x 6 x 2.5cm. - - Comply with all relevant European standards; Shrinking ratio: 2:1. - Easy Operation - Transparent sleeve provides precise inspection when strip and insert wires inside. - More Effective Way - An easy one step connection of wires, insulated and sealed. - No Wire - Tubing reduces in size and solder will melt and flow through the stripped wires, ensure strong holding --- your wire will never out of the connector. Can be used in marine and automobile applications.