1、Fast Melting: Heat shrinkable tubing can be quickly melting by heating, and fit items more closely and avoid damage. The shrinkage ratio is 2: 1 2、Aging Resistance: Heat shrink tube set is friction and aging resistance, corrosion prevention, waterproof, environmental protection, insulation, and more closely surrounds the object 3、Application: Used for electrical insulation, wire bundling, color coding, mechanical protection, wires, cable joints and daily maintenance, etc. 4、Easy to Carry: The heat shrinkable tube set is suitable for wires and cables, all in the storage box, easy to store or carry 5、Basic Specifications: Comes with 870 heat shrinkable tubes, 4 colors, 12 specifications, can meet your different needs 780 x Heat Shrinkable Tube1 x Storage Box Item Type: Insulated Heat Shrink TubeModel: 780 Pcs/SetsParameter Specification:  Color Specification(Approx.) Length(Approx.) Quantity Black Φ 1.0mm / 0.04in 45mm / 1.77in 200 Yellow  Φ 1.5mm / 0.06in 45mm / 1.77in 130 Red  Φ 2.0mm / 0.08in 45mm / 1.77in 80 Blue  Φ 2.5mm / 0.10in 45mm / 1.77in 80 Yellow  Φ 3.0mm / 0.12in 45mm / 1.77in 60 Black Φ 3.5mm / 0.14in 45mm / 1.77in 50 Red  Φ 4.0mm / 0.16in 45mm / 1.77in 40 Yellow  Φ 5.0mm / 0.20in 45mm / 1.77in 30 Red  Φ 6.0mm / 0.24in 45mm / 1.77in 20 Blue  Φ 7.0mm / 0.28in 45mm / 1.77in 40 Black  Φ 10.0mm / 0.40in 45mm / 1.77in 30 Black Φ 13.0mm / 0.51in 45mm / 1.77in 20