ZFE 5mm Double Cut Solid Carbide Bur Tungsten Carbide Rotary Burr Sets 3/32"(2.35mm) Shank For Dremel Foredom Rotary Tools for DIY Woodworking, Carving, Engraving, Drilling Pack Of 10Pcs Usage: for materials such as wood; plastic; soft metal as aluminum Cutting burs are larger than normal ones which makes it easier to do the wood job. Larger cutters work quicker and bits of wood and wood chips will not get stuck. Material: Tungsten Carbide Use: Rotary Burr Compatibility: smaller rotary tools