Feature:1. ELECTRICAL INSULATION: Suitable for electrical insulation, wire bundling, color coding, mechanical , wire or cable joints and daily maintenance, etc.2. QUICKLY BY HEATING: The heat shrinkable tube cable can be quickly by heating, so that can fit your items more closely and avoid damage3. 2:1 SHRINKAGE RATIO: The shrinkage ratio is 2:1, which surrounds the object more closely, very practical and useful4. FRICTION PROOF: Casing shrink tube set has many good advantages, such as friction proof, aging proof, proof, waterproof, environmental , and insulation5. WIDELY USED IN INSULATION : Widely used in insulation of wiring harness, solder joints, inductors, and proofSpecification:Item Type: Heat Shrink TubingModel: 580PcsProduct Parameter Specifications: Model Colour Length(approx.) Quantity Dia 1.0mm Black 38mm / 1.5in 80 Dia 1.5mm Yellow 38mm / 1.5in 80 Dia 2.0mm Black 38mm / 1.5in 50 Dia 2.0mm Blue 38mm / 1.5in 50 Dia 2.5mm Black 38mm / 1.5in 30 Dia 3.0mm Green 38mm / 1.5in 30 Dia 3.0mm Transparent 38mm / 1.5in 30 Dia 3.5mm Black 38mm / 1.5in 30 Dia 4.0mm Black 45mm / 1.77in 40 Dia 4.0mm Red 45mm / 1.77in 30 Dia 5.0mm Black 45mm / 1.77in 30 Dia 6.0mm Yellow 45mm / 1.77in 20 Dia 10.0mm Transparent 45mm / 1.77in 20 Dia 10.0mm Black 45mm / 1.77in 20 Dia 10.0mm Blue 45mm / 1.77in 20 Dia 8.0mm Red 45mm / 1.77in 20 Package List:580 x Heat Shrink Tubing1 x Storage Box