Features: Fast heat-shrinkage and strong insulation.OOTDTY  Protect the wires and prevent leakage of electricity.Good insulation, flame-retardant and anti-corrosion.Easy to use, you can use a lighter or hair dryer to shrink the shrink tube.The heat-shrinkable tube kit is available in a variety of sizes and colors and is easy to use. Specification: Material: PlasticShrinkage Ratio: 2:1Diameter: Approx. 1.5-10mm/0.06-0.39inchLength: Approx. 45mm/1.77inchPackage Includes: 80 Pcs 1.5mm Yellow80 Pcs 2.0mm Black80 Pcs 2.0mm Blue60 Pcs 3.0mm Green50 Pcs 4.0mm Black50 Pcs 4.0mm Red30 Pcs 5.0mm Black20 Pcs 6.0mm Yellow20 Pcs 8.0mm Red20 Pcs 10mm Green20 Pcs 10mm Black20 Pcs 10mm Bluenote: 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.