Heat Shrink Tubing, Thin Wall, Material Polyolefin, Flexible, Flame Retardant Yes, Adhesive Lined No, Shrink Ratio 2:1, Use With Wire Size 500 MCM to 1000 MCM, I.D. Before Shrinking 2 in, I.D. After Shrinking 1 in, Wall Thickness After Shrinking 0.05 in, Length 100 ft, Shrink Tubing Properties Acid and Alkali , Solvent , Color Blue, Temp. Range -67 Degrees to 275 Degrees F, Package Style to Length, Min. Shrink Temp. 212 Degrees F, Dielectric Strength 600 V