Heat Shrink Tubing, Heavy Wall, Material Cross-Linked Polyolefin, Rigid, Flame Retardant No, Adhesive Lined No, Shrink Ratio 3:1, Use With Wire Size 8 AWG to 1/0 AWG, I.D. Before Shrinking 0.8 in, I.D. After Shrinking 0.2 in, Wall Thickness After Shrinking 0.09 in, Length 25 ft, Shrink Tubing Properties Abrasion-, Acid and Alkali-, UV Light-, Color Black, Temp. Range -67 Degrees to 230 Degrees F, Package Style to Length, Min. Shrink Temp. 250 Degrees F