Heat Shrink Tubing, Thin Wall, Material Polyolefin with Adhesive, Semi Rigid, Flame Retardant No, Adhesive Lined Yes, Shrink Ratio 2.5:1, Use With Wire Size 16 AWG to 12 AWG, I.D. Before Shrinking 0.25 in, I.D. After Shrinking 0.08 in, Wall Thickness After Shrinking 0.05 in, Length 6 in, Shrink Tubing Properties Acid and Alkali , Color Black, Temp. Range -67 Degrees to 230 Degrees F, Package Style Individual Pieces, Min. Shrink Temp. 275 Degrees F, Dielectric Strength 600 V WARNING: Cancer - www.P65Warnings.ca.gov -