Heat Shrink Tubing Thin Wall Material Cross-Linked Polyolefin Flame Retardant Yes Adhesive Lined No Shrink Ratio 2 1 Use With Wire Size 6 AWG to 1 AWG I.D. Before Shrinking 0.5 in I.D. After Shrinking 0.25 in Wall Thickness After Shrinking 0.03 in Length 6 in Color Black Temp Range 131 Degrees F to 347 Degrees F Package Style Individual Pieces Min Shrink Temp 248 Degrees F Dielectric Strength 600 V Max Temp Rating 347 Degrees F Min Temp Rating 131 Degrees F