Feature: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 highspeed 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 FileMaterial: Tungsten CarbideShape: Cylindrical mounted pointParticle Size: 1000(mesh)Outer Diameter: Approx. 10mm/0.39inShank Diameter: Approx. 6mm/0.24inApplication: Polishing and grinding.Package List:5 xRotary File5 x Storage Box