Feature:1. Size Details: The total length of the set is about 49‑63mm, the shank diameter is about 6mm (1/4inch), the outer diameter of the tip is about 8mm/0.31in.2. High Quality Materials: The single cut burr set is made of premium quality tungsten carbide with heat treated process, the hardness can HRC70.3. Wide Application: The cemented carbide cutting burr set is very suitable for fine detail work, and widely used in metal products, woodworking, model engineering, jewelry making, welding, etc.4. Match to Use: Generally can be used with hand‑held electric or pneumatic tools with the speed of around 6000‑50000rpm, also for machine tools (the above is not included).5. High Performance: The burr file set is with ten times higher than the durability of high speed steel cutters, and more than 200 times higher than small grinding wheels, has a long service life.Specification:Item Type: Cutting Burr SetMaterial: Tungsten CarbideGranularity: 1000 MeshOuter Diameter: Approx. 8mm / 0.31inShank Diameter: Approx. 6mm / 1/4inApplication: Used in polishing and grinding, machinery, aviation, automobile, shipbuilding, chemical industry, craft carving and other industrial sectors. Package List:5 xCutting Burr5 x Storage Box