DescriptionThe item is a set of 50pcs butt wire crimp connectors terminals, which is made of copper, PVC and tinplate, and it features dual-walled design with polyolefin tubing in outside and hot melt adhesive in inside. They allows visual inspection, prevent corrosion, and provid a waterproof seal.Features- Color: White, red, blue, yellow. - Material: Copper, PVC, Tinplate - Solder are ideally suited to cable to extend using a heat (with a little practice goes a lighter on the go). - Simply the connector on the stripped cable pull and short warm up until the solder liquefies. - The color marking liquefied well, characterized the whole waterproof is closed. - Once the machined body is cooled, you can strain the cable mechanically. - Easy connection of wires, soldered, insulated and sealed can be ideal. - use in marine and automobile applications Polyolefin tubing in outside and hot - melt adhesive in inside Solder and seal and with advanced waterproof function - Polyolefin heat shrink butt connectors improved pullout strength, provides seal, strain relief, cable check, and insulation - Package Included:10x white: diameter 1.5mm, for cable cross section 0.3 - 0.5 mm20x red: diameter 3mm, for cable cross section 0.5-1.0 mm15x blue: diameter 5mm, for cable cross section 1.0-2.5 mm5x yellow: diameter 6mm, for cable cross-section 4.0-6.0 mm