Heat Shrink sleeves are commonly used to repair wires, protection, insulation, sealing of electrical utilities and moreHeat Shrink Tubing is ideal for small jobs as the mini rolls are very cost effectiveThese shrink tubes provide excellent insulation and protection for conductors, connections, joints and terminalscross-linked polyolefin. 2:1 shrink ratio. Rated 600 V, 125º C.