SummitLink 428 Pcs Red Black Assorted Heat Shrink Tube 10 Sizes Tubing Wrap Sleeve Set Combo 428pcs of assorted red black heat shrink tubing in 10 sizes. Sizes: 1mm, 2mm, 3mm, 4mm, 6mm, 8mm, 10mm, 14mm, 20mm, 30mm Covers all gauges of wires you'll need in many applications.