ITEM NAME:328Pcs Mixed Color Heat Shrink Tubing 8 Sizes Wire Cable Insulation Sleeve Kit.This is a heat-shrinkable tube kit includes 328pcs. 1 328PCS(8 Sizes) 2:1 Heat Shrink Tubing. Dielectric Strength:15 kV/mm. Widely used in cable connections, protection of welds, corrosion protection, insulation protection, etc.