Keep wires secured and sealed from corrosive elements with this heat shrink solderless butt connector. This semi-rigid, clear connector is made of copper, tin plating, and cross-linked ionic polymer insulation with a hot melt adhesive liner that seals and bonds to plastics, rubber and metals. Rated for 600 volts, 125 Degrees C with a shrink temperature of 90 Degrees C and shrink ratio of three to one. This yellow connector has a 12 to 10 gauge. Sold as a package of five.