shrinks tubes Size: Temperature range:shrinkage temperature 80 °, complete shrinkage temperature 120 °; Rated voltage:3000V Heat shrink Material : This heat-shrinkable tube is composed of a double layer of polyolefin and hot melt adhesive. The outer layer of polyolefin is insulated,4: 1 high shrinkage ratio. shrink tube Package Includes: 1pcs×Heat Shrink Tubing shrink wrap Easy to Use & Shrink: This heat shrink cable sleeve is very easy to use and shrink, just wrap your target wire and shrink Wide Applications: ideal for wire splicing, cable repair, solder joint protection, electronics insulation, and reinforcing headphone/phone cords in industrial, marine, and DIY projects