The 24pc Thremosleeve Heat Shrink Assortment includes 6" sections of Black heat shrink. Made from irradiated flexible polyolefin, this general purpose heat shrinkable tubing is perfect for insulating, bundling and identification uses. Mechanically tough, it will not cold flow, melt, or split when used over sharp or irregular shaped objects. Assortment inludes the following sizes: 3/32", 1/8", 3/16", 1/4", 3/8", 1/2".