Feature: 1. [VARIOUS SIZES AND COLORS] The heat shrinkable tube has all the sizes required for professional maintenance and home DIY work, especially the smaller sizes that are not common in the market, very practical. 2. [PLASTIC BOX PACKAGING] All heat shrinkable tubes are packed in a plastic box, easy to carry, and you don't have to worry about mixing tubes of different sizes. The specifications of all tube sizes are marked on the plastic box for easy identification and access. 3. [WIDE APPLICATIONS] Heat shrinkable tubing can be used for solder joint protection, wire grouping and marking, color coding, strengthening earphones and mobile charging cables, LED filament maintenance, remote control aircraft, vehicle maintenance, spectacle frames and headband DIY. 4. [RAPID SHRINKAGE] The shrinkage ratio of the heat shrinkable tube is 2:1, and the shrinkage temperature is 158℉ (70℃) ~ 100℃. At this temperature, the heat shrinkable tube will be evenly wound on the wire within 10 seconds. 5. [GOOD INSULATION AND FLAME RETARDANT PROPERTIES] Use these tubes to cover the exposed parts that need to be repaired, and use a hot air gun to shrink quickly and evenly to form a neat and long lasting tight seam. As your professional maintenance partner, the tube also has good insulation and flame retardant properties. Specification: Item Type: Heat Shrink Tubing Kit Material: PVC Shrinkage Ratio: 2:1 Parameter: Size(diameter x length)(approx.) Color Quantity (pcs) 1.0 x 45mm / 0.04 x 1.77in Black 90 1.5 x 45mm / 0.06 x 1.77in Red 70 2.0 x 45mm / 0.08 x 1.77in Yellow 80 2.5 x 45mm / 0.1 x 1.77in Green 70 3.0 x 45mm / 0.12 x 1.77in Black 50 3.5 x 45mm / 0.14 x 1.77in Blue 45 4.0 x 45mm / 0.16 x 1.77in Red 40 5.0 x 45mm / 0.2 x 1.77in Blue 25 6.0 x 45mm / 0.24 x 1.77in Blue 20 7.0 x 45mm / 0.28 x 1.77in Red 25 10.0 x 45mm / 0.39 x 1.77in Black 25 13.0 x 45mm / 0.51 x 1.77in Black 20 . Package List: 560 x Heat Shrink Tubing1 x Storage Box