Features: Fast heat-shrinkage and strong insulation. 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. Specifications: Material: Plastic Shrinkage Ratio: 2:1 Diameter: Approx. 1.0-14mm/0.04-0.55inch Package Includes: 120 Pcs 40x1.0mm Black Red Yellow Green 60 Pcs 40x2.0mm Black Red Yellow Blue 32 Pcs 40x3.0mm Black Red Yellow Green 32 Pcs 40x4.0mm Black Red Yellow Blue 32 Pcs 40x6.0mm Black Red Yellow Green 20 Pcs 80x8.0mm Black Red Yellow Blue 16 Pcs 80x8.0mm Black Red Yellow Green 16 Pcs 80x8.0mm Black Red Yellow Blue note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.