20 Different shape engraving bit of the most commonly used types to meet your different needs. . To fit different woodworking situations, each Burr is shaped to fit different angles or situations, suitable for engraving, beveling, chamfering, grooving, reaming, hollow Suitable for detailed work, such as building and sanding dollhouse furniture, model tools. Able to engrave on a wide range of materials including wood, ABS, acrylic, PVC, plastics, etc. A valuable supplement to woodworking rotating tools Made of high-speed steel (HSS) and coated with titanium for long life and exceptionally precise cuts, durable, good wear resistance, and heat resistance. Save your time and money With 1/8 inch(3mm) shank, make these HSS carbide rotary files can work with most rotary tools or die grinders (such as, for Dremel Wen, for Apollo) Colour: Silver Material: steel Package Contents: 1set x wood carving tools electric