Heat Shrink Tubing, Thin Wall, Material Modified Chlorinated Polyolefin, Flexible, Flame Retardant No, Adhesive Lined No, Shrink Ratio 2:1, Use With Wire Size 4 AWG to 3/0 AWG, I.D. Before Shrinking 0.75 in, I.D. After Shrinking 0.38 in, Wall Thickness After Shrinking 0.06 in, Length 4 ft, Shrink Tubing Properties Abrasion , Acid and Alkali , Fuel and Oil , Solvent , Color Black, Temp. Range -94 Degrees to 250 Degrees F, Package Style Individual Pieces