The HellermannTyton 309-20246 Heat Shrinkable Tubing 2:1 is a flexible polyolefin tubing with a 2.4:1 shrink ratio, designed for Electromechanical and Electrical insulation and wire strain relief of wires and cables. The tubing is manufactured from polyolefin material and offers superior flame retardancy, abrasion resistance and dielectric strength, as well as chemical and stress cracking resistance. The heat shrinkable tubing also offers protection from liquids, vapors, and gasses. This heat shrinkable tubing has a shrink temperature of 110°C (230°F). The tubing wall thickness is 0.12" (2.4: 1 ratio, shrink temperature 120°C (227°F). The tubing has a recovered ID of 0.48" and is blue in color.