Vktech 60pcs Assortment Heat Shrink Tubing Tube Sleeving Wrap Wire 6 Sizes Supplied internal diameter: 2.0mm, 4.0mm, 6.0mm, 8.0mm, 10.0mm, 15.0mm Total Length: 150mm Material: Polyolefin Approvals: UL Approved Supplied format (round or flat): Product is supplied flat