Heat Shrink Tubing, Thin Wall, Material Polyolefin with Adhesive, Flexible, Flame Retardant Yes, Adhesive Lined Yes, Shrink Ratio 2:1, Use With Wire Size 3 AWG to 4/0 AWG, I.D. Before Shrinking 0.75 in, I.D. After Shrinking 0.38 in, Wall Thickness After Shrinking 0.04 in, Length 4 ft, Shrink Tubing Properties Abrasion , Acid and Alkali , Color Black, Temp. Range -67 Degrees to 230 Degrees F, Package Style Individual Pieces, Min. Shrink Temp. 250 Degrees F WARNING: Cancer - www.P65Warnings.ca.gov -