Features [MULTIPLE USAGES] Suitable for electrical insulation, wire bundling, color coding, mechanical protection, cable joints and daily maintenance, etc. [EASY OPERATION] The shrinkage ratio is 2:1, the heat shrink tube can be quickly melt by heating to fit the items closely. [ MATERIAL] Made of excellent material, which has good insulation and corrosion resistance, waterproof and environmental protection. [VARIOUS SIZES] The kit contains heat shrink tubing of various sizes and colors, suitable for different maintenance needs. [WITH STORAGE BOX] Storage box with compartments for easy organization and storage of these heat shrinkable tubes, easy to use and replace. Spec: Item Type: Heat Shrink Tubing Kit Model: 140 Pieces Model Length Approx. Quantity Remark Ф2.0mm 30mm / 1.2in 50pcs Red, Green, White, Black, Yellow Each 10pcs Ф3.0mm 65mm / 2.6in 25pcs Red, Green, White, Black, Yellow Each 5pcs Ф4.0mm 65mm / 2.6in 15pcs Red, Green, White, Black, Yellow Each 3pcs Ф5.0mm 65mm / 2.6in 10pcs Red, Green, White, Black, Yellow Each 2pcs Ф6.0mm 65mm / 2.6in 10pcs Red, Green, White, Black, Yellow Each 2pcs Ф8.0mm 90mm / 3.5in 15pcs Red, Green, White, Black, Yellow Each 3pcs Ф10.0mm 90mm / 3.5in 15pcs Red, Green, White, Black, Yellow Each 3pcs packing list: 140 x Heat Shrink Tubing 1 x Storage Box Package List 140 x Heat Shrink Tubing 1 x Storage Box