A thin-walled and flexible heat shrinkable tube made of cross-linked polyolefin with a shrinkage ratio of 3:1. It is available in 1-meter lengths, in 9 sizes, with internal diameters ranging from 1.5 mm to 101.6 mm and two basic colors: black and yellow/green. heat shrink tubing is supplied in cardboard boxes, convenient for storage and exhibition presentation. TREDUX thin-walled tubes are used as basic electrical insulation and as cable and wire protection against mechanical damage.