Heat Shrink Tubing, Heavy Wall, Material Polyolefin with Adhesive, Flexible, Flame Retardant Yes, Adhesive Lined Yes, Shrink Ratio 3:1, Use With Wire Size 250 MCM to 750 MCM, I.D. Before Shrinking 0.17 in, I.D. After Shrinking 0.63 in, Wall Thickness After Shrinking 0.13 in, Length 48 in, Shrink Tubing Properties Abrasion Resistant, Color Red, Temp. Range -67 Degrees to 230 Degrees F, Package Style Individual Pieces, Min. Shrink Temp. 257 Degrees F, Dielectric Strength 600 V