Heat shrink Material environmental protection: heat shrink tubing is made of polyolefin which ensures the heat shrink wrap 2:1 retraction ratio This product has a 2:1 shrink ratio and is for up to 600V ,-55 degree ~ 125 degree Degree Centigrade. 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 heatshrink Widely Application: With the compact design and wear-resistant function, the heat shrink connector can be used in many place.Such as broken wires, electrical insulation, mechanical protection, wire bandwidth, wire connection, wire ends process, wire / cable junctions, daily repairs,etc. shrink tube Package Includes: 1pcs×Heat Shrink Tubing