ITEM NAME:6pcs Carbide Cutter Rotary Burr Set CNC Engraving Bit Rotary File Bur Burr Product Description Description: Feature: 100% brand new and high quality For rasping or filing wood or soft metal. Special alloy steel is hardened and tempered for long life. Precision cutting edges will not clog or load up. 1/4'' shank fits all drills. 6pcs of higher quality of rotary file set for rotary tools For processing of metallic and Non-metallic surfaces using an engraving machine or mini-Drill various forms of cutting part provide For electric grinding of metal, plastic, wood, metal and other soft grinding Specification : Color: as the picture Shank Diameter: 6mm, 1/4" Type: Rotary Burr Quantity: 6 pcs Overall Length:about 53-55mm Material : High Speed Steel Application: suitable for grinding metal, plastic, wood soft metal etc. Inclus: 6pcs Car.Type: Rotary Burr. 6pcs of higher quality of rotary file set for rotary tools. Nous vous prions de nous excuser pour tout le retard des rà ©ponses pendant les vacances. Special alloy steel is hardened and tempered for long life.