Heat Shrink Tubing, , Thin Wall, Material Acrylate Olefin, Flexible, Flame Retardant No, Adhesive Lined No, Shrink Ratio 2:1, Use With Wire Size 20 AWG to 18 AWG, I.D. Before Shrinking 0.19 in, I.D. After Shrinking 0.09 in, Wall Thickness After Shrinking 0.02 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