Features 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 on cast iron, cast steel, bearing steel, high carbon steel, chrome‑nickel alloy, bronze, brass, tile, marble, jade and bone. 5、Widely used for carving, shaping and for the removal of edges or corners, burrs and excess material. Specification 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 on cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass, tile, marble, jade and bone. Widely used for carving, shaping and for the removal of edges or corners, burrs and excess material. Specifications: Material: Tungsten carbide steel Shank Diameter: 3mm / 0.12in Head Diameter: 6mm / 0.24in Quantity: 10pcs Weight: 70g / 2.5oz Package list: 10 * Burrs Package List 10 * Burrs