Heat Shrink Tubing Medical Grade Thin Wall Material Acrylate Olefin Flexible Flame Retardant No 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 100 ft Shrink Tubing Properties Abrasion Resistant Medical Grade UV Light Resistant Color Black Temp Range -67 Degrees to 250 Degrees F Package Style Cut to Length Min Shrink Temp 250 Degrees F