Description:PREMIUM material: Sphere Rotary File is made of high quality Carbon Steel material, high hardness, wear resistance, durable.USES: The burr design of the drill bit, can sanding wood surfaces, maintain smooth and clean.BURR DESIGN: This Angle Grinder Rotary File with multi small and solid burr, improving wear resistance.PRACTICAL TOOL: Grinding Head is an essential attachment tool for woodworker, carpenter, DIY carving lovers, etc.APPLICATION: This angle grinder head can used for woodworking project, wood, multilayer board, board, etc. Great for engraving, carving, grinding, polishing.Specification:Material: Carbon SteelSize Chart:Diameter: 2cm/0.79inch2.5cm/0.98inch3cm/1.18inchPackage Includes:1 Sphere Rotary FileNote:Please allow slightly errors due to manual measurement and different monitors.'