Features 1、High Quality Material: Rotary file is made of high quality heat treated tungsten carbide material, high hardness, wear resistant and sturdy. 2、Good Work Efficiency: Using these rotary burr set with a rotary tool, the processing efficiency is higher than the manual file tool, convenient for using. 3、Eco Friendly: Rotary burr set can take place of the small grinding wheel with the handle, producing less dust or pollution, more eco friendly. 4、Durable: Durability is ten times higher than high‑speed steel tools and more than 200 times higher than the small grinding wheels, safe and reliable. 5、Widely Use: Carbide burr set is widely used in industrial sectors such as machinery, aviation, automobile, shipbuilding, chemical engineering and process engraving. Specification Item Type: Rotary File Material: Tungsten Carbide Shape: Cylindrical mounted point Particle Size: 1000(mesh) Outer Diameter: Approx. 10mm/0.39in Shank Diameter: Approx. 6mm/0.24in Application: Polishing and grinding Package List 5 x Rotary File 5 x Storage Box