Black Irradiated flexible polyolefin general purpose heat shrinkable tubing. Used for insulating, bundling and identification. Mechanically tough, will not cold flow, melt, or split when used over sharp or irregular shaped objectsIncludes: 60 x 1/16", 40 x 1/8", 20 x 3/16", 18 x 1/4", 10 x 3/8", 10 x 1/2", Storage Box