Features: These burrs are made of tungsten carbide steel for high hardness, high abrasion resistance and high heat resistance. There are total 10 pieces double cut burrs in various shapes that you can use for many purposes. 3mm shank would fit many electric powered or pneumatic powered tools and machine tools. They can be used for carving, shaping and for the removal of edges or corners, burrs and excess material. Widely used in machinery, aviation, automobiles, ships, chemical industry, technology, carving, etc. Specification: Material: Tungsten carbide steel Hardness: HRC70 Shank Diameter: 3mm / 0.12in Head Diameter: 6mm / 0.24in Type: #1: Type A coarse teeth, single cut #2: Type C coarse teeth, single cut #3: Type D coarse teeth, single cut #4: Type E coarse teeth, single cut #5: Type F coarse teeth, single cut #6: Type G coarse teeth, single cut #7: Type H coarse teeth, single cut #8: Type L coarse teeth, single cut #9: Type M coarse teeth, single cut #10: Type N coarse teeth, single cut Weight: 79g / 2.8oz Package list: 10 * Burrs 1、These burrs are made of tungsten carbide steel for high hardness, high abrasion resistance and high heat resistance. 2、There are total 10 pieces double cut burrs in various shapes that you can use for many purposes. 3、3mm shank would fit many electric powered or pneumatic powered tools and machine tools. 4、They can be used for carving, shaping and for the removal of edges or corners, burrs and excess material. 5、Widely used in machinery, aviation, automobiles, ships, chemical industry, technology, carving, etc.