Heat Shrink Tubing, Heavy Wall, Material Polyolefin with Adhesive, Flexible, Flame Retardant No, Adhesive Lined Yes, Shrink Ratio 3:1, Use With Wire Size 4 AWG to 2/0 AWG, I.75 in, I. After Shrinking 0. 257 Degrees F, Dielectric Strength 600 V Shrink Temp.