Heat Shrink Tubing, Thin Wall, Material Modified Polyvinylidene Fluoride, Rigid, Flame Retardant Yes, Adhesive Lined No, Shrink Ratio 2:1, Use With Wire Size 20 AWG to 18 AWG, I.D. Before Shrinking 0.19 in, I.D. After Shrinking 0.09 in, Wall Thickness After Shrinking 0.01 in, Length 4 ft, Shrink Tubing Properties Abrasion , Acid and Alkali , Fuel and Oil , High Heat , Solvent , Color Clear, Temp. Range -67 Degrees to 347 Degrees F