Enkay 7530 Red, Black, White Heat Shrink Tube Assortment 12 Pack For insulating bare and frayed wire. Tubing shrinks to half it's original size. Includes 3 different sizes: 12" x 1/8", 12" x 3/16", and 12" x 1/4". Each package comes with 9 pieces, 3 of each color with 1 of each size per color. Included colors are red, black, and white.