1、Dimensions: Total length 52‑63mm/2.05‑2.48in, shank diameter 6mm/0.24in, outer diameter of the tip 10mm /0.39in, tip blade length 9‑20mm/0.35‑0.79in. 2、Durable Construction: Using high‑quality heat‑treated tungsten carbide, the hardness can reach HRC70, durable to use, very suitable for fine detail work. 3、Multipurpose Tool: These cutting burr set is widely used in metal products, woodworking, model engineering, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, etc. 4、Easy to Use: Generally can be used with hand‑held electric or pneumatic tools (also for machine tools, the speed of electric/pneumatic tools is usually around 6000‑50000 rpm. 5、Long Service Life: Ten times higher than the durability of high‑speed steel cutters, and more than 200 times higher than the durability of small grinding wheels.