Heat Shrink Tubing Thin Wall Material Cross-Linked Polyolefin Flame Retardant Yes Adhesive Lined No Shrink Ratio 2 1 Use With Wire Size 16 AWG to 12 AWG I.D. Before Shrinking 0.25 in I.D. After Shrinking 0.13 in Wall Thickness After Shrinking 0.03 in Length 6 in Color Black Temp Range -55 Degrees to 135 Degrees F Package Style Individual Pieces Min Shrink Temp 248 Degrees F Dielectric Strength 600 V Max Temp Rating 135 Degrees F Min Temp Rating -55 Degrees F