Features These burrs are made of tungsten carbide steel compatible with high hardness, high abrasion resistance and high heat resistance. There are total 10 pis double cut burrs in various shapes that you can use compatible with many purposes. 2.35mm shank would fit many electric powered or pneumatic powered tools and machine tools. They can be used on cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass, tile, marble, jade and bone. Widely used compatible with carving, shaping and compatible with the removal of edges or corners, burrs and excess material. Features: These burrs are made of tungsten carbide steel compatible withhigh hardness, high abrasion resistance and high heat resistance. There are total 10 pis double cut burrs in various shapes that you can use compatible with many purposes. 2.35mm shank would fit many electric powered orpneumaticpoweredtools and machine tools. They can be used on cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass, tile, marble, jade and bone. Widely used compatible with carving, shaping and compatible with the removal of edges or corners, burrs and excess material. Specifications: Material: Tungsten carbide steel Shank Diameter: 2.35mm / 0.1in Head Diameter: 6mm / 0.2in Quantity: 10pcs Weight: 70g / 2.5oz Package list: 10 * Burrs Package List 10 * Burrs