Features Versatile Applications: Ideal for electrical insulation, wire bundling, color coding, and mechanical protection, making it for both DIY projects and professional use Quick and Simple Use: Features a 2:1 shrinkage ratio, allowing the tubing to easily conform to your wires when heated for a secure fit Superior Durability: Crafted from high-quality materials that provide excellent insulation, resistance, and waterproofing for long-lasting performance Features: 1、[MULTIPLE USAGES] Suitable for electrical insulation, wire bundling, color coding, mechanical protection, cable joints and daily maintenance, etc. 2、[EASY ] The shrinkage ratio is 2:1, the heat shrink tube can be quickly melt by heating to fit the items closely. 3、[ MATERIAL] Made of excellent material, which has good insulation and resistance, waterproof and environmental protection. 4、[VARIOUS SIZES] The kit contains heat shrink tubing of various sizes and colors, suitable for different maintenance needs. 5、[WITH STORAGE BOX] Storage box with compartments for easy organization and storage of these heat shrinkable tubes, easy to use and replace. Specification: Item Type: Heat Shrink Tubing Kit Model: 140 Pieces ModelRed, Green, White, Black, Yellow Each 3pcs Package List: 140 x Heat Shrink Tubing 1 x Storage Box Package List 140 x Heat Shrink Tubing 1 x Storage Box