Heat Shrink Tubing Food Grade Thin Wall Material Acrylate Olefin Flexible Flame Retardant No 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 100 ft Shrink Tubing Properties Food Grade Color Black Temp Range -67 Degrees to 250 Degrees F Package Style Cut to Length Min Shrink Temp 250 Degrees F Dielectric Strength 1 800 V Max Temp Rating 250 Degrees F