SHINA 10 Pieces Tungsten Carbide Rotary Burr SET 1/8'' Shank Fit Dremel Tools for DIY Woodworking, Carving, Engraving, Drilling Usage: for materials such as wood; plastic; soft metal as aluminum... Cutting edge diameter: 1/4'' (6mm) 1/8" (3mm)shank fit rotary tools Cutting burs are larger than normal ones which makes it easier to do the wood job. Package includes: 10 pcs ( that is 1 set)