Feature: 1. These burr bit sets are made of high‑quality carbide tungsten steel with hardness up to HRC70. 2. With double cutting teeth to prevent chipping, all shapes of models can be processed with high accuracy. 3. The processing efficiency is dozens of times higher than that of a manual file, and nearly ten times higher than that of a small grinding wheel with a handle, without dust and pollution. 4. Equipped with a convenient plastic storage box, no need to organize and always keep tidy, so you can take it with you, which is convenient and practical. 5. An indispensable tool for metalworkers and DIY carving enthusiasts, easy to master and use, safe and reliable. Specification: Item Type: Carbide Burr Material: Tungsten Steel Blade Diameter: Approx.12mm / 0.5in Blade Length: Approx.25mm / 1.0in Shank Diameter: Approx.6mm / 0.2in Uses: Widely Used in Metal Products, Tool Manufacturing, Engineering, Model Engineering, Wood Carving, Jewelry Manufacturing, Welding, Chamfering, Casting, Deburring, Grinding, Cylinder Head Transplantation and Engraving.. Package List: 1 x Carbide Burr Note: To prevent the chip from flying away during work, please wear protective glasses.