Heat Shrink Tubing, , Thin Wall, Material Acrylate Olefin, Flexible, Flame Retardant No, Adhesive Lined No, Shrink Ratio 2:1, Use With Wire Size 16 AWG to 12 AWG, I.D. Before Shrinking 0.25 in, I.D. After Shrinking 0.13 in, Wall Thickness After Shrinking 0.03 in, Length 100 ft, Shrink Tubing Properties , Color Black, Temp. Range -67 Degrees to 250 Degrees F, Package Style to Length, Min. Shrink Temp. 250 Degrees F, Dielectric Strength 1,800 V