Description: 530 Pieces assorted heat shrink tubing in 5 colors and 8 sizes satisfied for your different need. All packed in a plastic case for easy access and carry Suitable for electrical insulation, wire bundling, colour coding, mechanical protection, wire / cable joints and daily repairs etc. Internal Diameter: 1.5, 2, 3, 4, 5, 6, 8, 10mm Color: Black, Blue, Green, Red, Yellow Length: 34mm/1.3inch Specification: Material: Polyolefin, Heat shrink tubing Contains a shrink ratio of 2:1 Operating Temperature: -55 °C to +125 °C Minimum Shrinkage Temp: +85 °C Full Shrinkage Temp: +120 °C maximum C Package Includes: 80 Pieces 1.5 x 45mm (Yellow) 80 Pieces 2.0 x 45mm (Blue) 80 Pieces 2.0 x 45mm (Black) 60 Pieces 3.0 x 45mm (Green) 50 Pieces 4.0 x 45mm (Red) 50 Pieces 4.0 x 45mm (Black) 30 Pieces 5.0 x 45mm (Black) 20 Pieces 6.0 x 45mm (Yellow) 20 Pieces 8.0 x 45mm (Red) 20 Pieces 10.0 x 45mm (Green) 20 Pieces 10.0 x 45mm (Blue) 20 Pieces 10.0 x 45mm (Black) Note: You should keep about 1 cm distance when you use the lighter to shrink the tube, because it is easy to leave a black mark