580 PCS Heat Shrink Tubes Sleeve Electrical Sleeving Cable Wire Heatshrink UK. This product includes heat shrink tubing in black, red, yellow, blue, and green colours with an inner diameter ranging from 1.0mm to 10.0mm. Made of plastic and Polyethylene, it has a shrinkage ratio of 2:1 and a tensile strength of 10.4 Mpa. Operating temperature ranges from -55°C to +125°C, with a maximum shrink temperature of +70°C and full shrink temperature up to +110°C. Unit quantity consists of 580 pieces. 15 available