RockDIG 74Pcs 3:1 waterproof heat shrink tubing double wall adhesive lined assortment kit 4 large size(DIA)1" 3/4" 1/2" 3/8"(black&red) for electrical insulation(e.g. copper ring eye terminals lugs), wire bundling, mechanical protection, cable joints and daily repairs etc...</br></br> Material: Polyolefin</br> Shrinkage ratio: 3: 1</br> Starting shrinkage temperature: ≥ 70 ℃</br> Full shrinkage temperature: ≥125 ℃</br> Operating temperature: -45 ℃ to 125 ℃</br> Tensile strength: 10.4Mpa</br> Dielectric strength: 15 kV/mm</br> Flammability: Flame Retardant</br></br> <b>Package Includes:</b></br> Φ3/8" - length 3.00", 12pcs (black - 6pcs, red - 6pcs)</br> Φ1/2" - length 1.77", 32pcs (black - 16pcs, red - 16pcs)</br> Φ3/4" - length 2.20", 24pcs (black - 12pcs, red - 12pcs)</br> Φ1" - length 3.00", 6pcs (black - 3pcs, red - 3pcs)</br> Plastic storage box - 1pcs</br></br>