Features ELECTRICAL INSULATION: Suitable for electrical insulation, wire bundling, color coding, mechanical protection, wire or cable joints and daily maintenance, etc. QUICKLY MELTED BY HEATING: The heat shrinkable tube cable can be quickly melted by heating, so that can fit your items more closely and avoid damage 2:1 SHRINKAGE RATIO: The shrinkage ratio is 2:1, which surrounds the object more closely, very practical and useful FRICTION PROOF: Casing shrink tube set has many good advantages, such as friction proof, aging proof, corrosion proof, waterproof, environmental protection, and insulation WIDELY USED IN INSULATION PROTECTION: Widely used in insulation protection of wiring harness, solder joints, inductors, and rust proof Specification: Item Type: Heat Shrink Tubing Model: 580Pcs Product Parameter Specifications: ModelColourLength(approx.)QuantityDia 1.0mmBlack38mm / 1.5in80Dia 1.5mmYellow38mm / 1.5in80Dia 2.0mmBlack38mm / 1.5in50Dia 2.0mmBlue38mm / 1.5in50Dia 2.5mmBlack38mm / 1.5in30Dia 3.0mmGreen38mm / 1.5in30Dia 3.0mmTransparent38mm / 1.5in30Dia 3.5mmBlack38mm / 1.5in30Dia 4.0mmBlack45mm / 1.77in40Dia 4.0mmRed45mm / 1.77in30Dia 5.0mmBlack45mm / 1.77in30Dia 6.0mmYellow45mm / 1.77in20Dia 10.0mmTransparent45mm / 1.77in20Dia 10.0mmBlack45mm / 1.77in20Dia 10.0mmBlue45mm / 1.77in20Dia 8.0mmRed45mm / 1.77in20 Package List:580 x Heat Shrink Tubing1 x Storage Box Package List 580 x Heat Shrink Tubing 1 x Storage Box