Description: The environmentally friendly heat shrinkable tube does not produce any toxic or harmful substances. It is widely used in wire connection and has many advantages in flame retardancy, insulation, environmental protection, softness, fast shrinkage, stable performance, etc. Features: These heat shrink tubes are made of high-quality polyolefin which is flame retardant, flexible and shrinks quickly. This set contains many popular 2:1 heat shrink tubes in six different diameters. The different colors of heat shrink tubes are ideal for wire identification, concise and clear. There are a total of 70 heat shrink tubes that can meet your basic daily needs. Ideal for auto repair shops, auto electricians, mechanics, workshops, etc. Suitable for cars, vans, RVs, etc. Specifications: Material: Polyolefin Diameter: 1.0mm, 1.5mm, 2.5mm, 3.5mm, 5.0mm Fully shrunk diameter: 0.65mm, 0.85mm, 1.3mm, 1.8mm, 2.5mm Shrinkage rate: 2:1 min. Shrinkage Temperature: 70 Full Shrinkage Temperature: 110 Flame Retardant: Yes Halogen-Free: Yes Quantity x Diameter x Length x Color: 14pcs x 1.0mm x 200mm x Yellow, Blue, Black, Green, Red, White, Clear (2pcs each) 14pcs x 1.5mm x 200mm x Yellow, Blue, Black, Green, Red, White, Clear (2pcs each) 14pcs x 2.5mm x 200mm x Yellow, Blue, Black, Green, Red, White, Clear (2pcs each) 14pcs x 3.5mm x 200mm x Yellow, Blue, Black, Green, Red, White, Clear (2pcs each) 14pcs x 5.0mm x 200mm x Yellow, Blue, Black, Green, Red, White, Clear (2pcs each) Package Content: 70 x Heat Shrink Tubing