Quick view ThermoSleeve ThermoSleeve 160pc of 4" Black 3/8" to 1/16" 2:1 Ratio Polyolefin Heat Shrink Thermosleeve is the leading supplier of heat shrinkable products with over 20-plus years' experience in the industry. Since 1988 our factory has grown to produce 30% of all the world's heat shrink... $8.77