General description Made of premium tungsten steel with a hardness of 70 HRC, this 20pcs Carbide Burr Set is designed for woodworking and polishing. It features long-lasting wear resistance, high strength, and good cutting accuracy, making it suitable for various materials including wood, iron, carbon steel, alloy steel, stainless steel, copper, and aluminum. The set includes 10 different shapes of bits, providing versatility for drilling, carving, grinding, polishing, and deburring. Technical specifications Material: Tungsten steel Hardness: 70 HRC Shank size: 1/8" Max speed: 3MM head-120000 RPM, 6MM head-60000 RPM Recommended normal use: 6000-60000 RPM Compatibility and accessories Compatible with any 1/8" hand-held rotary tool Works with brands such as Dremel, Bosch, DeWALT, Milwaukee, FIXTEC, Foredom, etc. Usage Ideal for detail work including metalworking, casting, surface cleaning, wood carving, jewelry making, and sculpture.