ITEM NAME:100pc/set Heat Shrink Tube Insulation Coating Polyolefin Shrink Assorted Tub Hn.Ideal for professional use, fast and safe way to wrap wire harness. Set includes seven of the most popular sizes. 3.0 mm, 5 colors, 4 pieces each, 20 pieces, each piece is 100 mm. 2.5 mm, 5 colors, 4 pieces each, 20 pieces, each piece is 100 mm.