Great quality poly-olefin heatshrink tube polyolefin heatshrink tube heat shrink sleeve polyolefin are excellent for insulation. Perfect for electrical, electronic, automotive, hobby, electrical insulation, wire bundling, colour coding, mechanical protection, wire/cable joints and repairs . Good electrical, mechanical and chemical performance. Ideal for hobbyists and model makers, electrical, electronic, automotive and general purpose uses. Specification: 1. Diameter: 100mm, length-0.5 meters 2. Color: Black 3. Material: - polyolefin 4. Shrinkage ratio: 2: 1 (will shrink to 1/2 its supplied diameter) 5. Minimum shrinkage temp: +70 6. Full shrinkage temp: +110 deg c 7. Maximum operating temperature: -55degc to +125degc 8. Tensile strength: 10.4 mpa 9. Dielectric strength: 20 kv/mm how to use a heat shrink tube 1. Take a heat shrink tube with diameter slightly larger than cut it according to the required length. 2. Use a heat source to heat up the tube for 10-20 seconds. 3. You will notice the heat shrink tube shrinking down and upon completion it will hold the wire firmly. In market, 2 types of heatshrink tubes available. Polyolefin heatshrink tube 1. Material- polyolefin 2. Feels like rubber. 3. Does tubes don't get cracked with time 4. Works best for insulation. 5. Is being used in military, aerospace and railway industries.