General description 5Pcs/Set Tungsten Carbide Rotary Burrs Bits Set is designed for polishing, grinding, engraving, and drilling. Made from high-quality heat-treated tungsten carbide, these burrs are durable and ideal for fine detail work across various applications. Technical specifications Total length: 49‑63mm / 1.93‑2.48in Shank diameter: 6mm / 0.24in Outer diameter of the tip: 8mm / 0.32in Tip blade length: 7.2‑20mm / 0.28‑0.79in Granularity: 1000 (mesh) Usage These cutting burrs are widely used in various fields including: Metal products Woodworking Model engineering Wood carving Jewelry making Welding Chamfering Casting Deburring Grinding Other information Durability: Ten times higher than high-speed steel cutters and over 200 times higher than small grinding wheels. Compatible with hand-held electric or pneumatic tools, typically operating at speeds of 6000‑50000 rpm. Includes 5 x Grinder Bits and 5 x Storage Boxes.