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 Resistant Acid and Alkali Resistant Fuel and Oil Resistant Solvent Resistant Color Black Temp Range -94 Degrees to 250 Degrees F Package Style Individual Pieces