Heat Shrink Tubing, Heavy Wall, Material Cross-Linked Polyolefin with Adhesive, Semi Rigid, Flame Retardant Yes, Adhesive Lined Yes, Shrink Ratio 3:1, Use With Wire Size 12 AWG to 8 AWG, I.D. Before Shrinking 0.4 in, I.D. After Shrinking 0.15 in, Wall Thickness After Shrinking 0.06 in, Length 6 in, Shrink Tubing Properties Solvent , UV Light , Color Black, Temp. Range -55 Degrees to 110 Degrees F, Package Style Individual Pieces, Min. Shrink Temp. 248 Degrees F