Heat Shrink Tubing Kit, Thin Wall, Material Polyolefin, Flexible, Flame Retardant Yes, Adhesive Lined No, Temp. Range -67 Degrees to 275 Degrees F, Shrink Ratio 2:1, Number of Pieces 8, Includes (2) 1 in, (2) 1/2 in, (2) 3/4 in, (2) 3/8 in, Color Black, Length 6 in, Shrink Tubing Properties UV Light , Package Style Sticks, Kit Contents Multiple Sizes, Use With Wire Size 0.25 in to 1.00 in, I.D. Before Shrinking 1/2 in, 3/4 in 1 in, 3/8 in, Dielectric Strength 600 V