Features: brand new and high quality Material: made of polyolefin, shrinkage ratio: 2:1 (will shrink to 1/2 of its supply diameter) Suitable for electrical insulation, wire bundling, color coding, mechanical for protection, wire/cable joints and daily maintenance, etc. Equipped with 164 heat shrinkable tubes, 5 colors (yellow, blue, black, green, red), 8 specifications, to meet your different needs. Length: 40mm/80mm, diameter: 1mm/2mm/3mm/4mm/6mm/8mm/10mm/14mm, shrink ratio: 2:1 Package contains: 1 x 164PCS (8 sizes) 2:1 heat shrinkable tube Specifications: Material: Plastic Weight: 40g Size: As picture shows Shrinkage Ratio: 2:1 Operating Temperature: -55°C to +125°C Minimum Shrinkage Temp: +70°C Full Shrinkage Temp: +110°C Maximum Tensile Strength: 10.4 Mpa Dielectric Strength:15 kV/mm Package Includes: 60Pcs 1.0x40mm/0.04x1.57inch(Yellow,Black,Red,Green) 30Pcs 2.0x40mm/0.08x1.57inch(Yellow,Black,Red,Blue) 20Pcs 3.0x40mm/0.12x1.57inch(Yellow,Black,Red,Green) 16Pcs 4.0x40mm/0.16x1.57inch(Yellow,Black,Red,Blue) 12Pcs 6.0x40mm/0.24x1.57inch(Yellow,Black,Red,Green) 10Pcs 8.0x80mm/0.31x3.15inch(Yellow,Black,Red,Blue) 8Pcs 10.0x80mm/0.39x3.15inch(Yellow,Black,Red,Green) 8Pcs 14.0x80mm/0.55x3.15inch(Yellow,Black,Red,Blue) note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.