Heat Shrink Tubing Heavy Wall Material Cross-Linked Polyolefin with Adhesive Flame Retardant No Adhesive Lined Yes Shrink Ratio 3 1 Use With Wire Size 2/0 AWG to 350 MCM I.D. Before Shrinking 1.5 in I.D. After Shrinking 0.47 in Wall Thickness After Shrinking 0.16 in Length 12 in Shrink Tubing Properties High Heat Resistant Color Black Temp Range -67 Degrees to 230 Degrees F Package Style Individual Pieces Min Shrink Temp 248 Degrees F Dielectric Strength 600 V