Features:1.The rotary file can be used on cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy , bronze, brass, tiles, marble, jade and bone2. These burrs are made of tungsten carbide steel for high hardness, high abrasion resistance and high heat resistance3.The double-cut rotary cutter is designed for carving, shaping and for removing edges or corners, burrs and excess material4.There are total 10 pieces of double-cut burrs in different shapes that you can use to many purposes. 3mm shank is suitable for many electric or pneumatic tools and machine tools5. metal rotary drill bit, strictly tested to ensure the best quality before shipment, safe to use< /p>Specifications:Material: Tungsten Carbide SteelShank Diameter: 3mm / 0.12inShank Diameter: the head: 6mm / 0.24inQuantity: 10 piecesPackage list:10 * burrsWidely ApplicationThe rotary file can be used on cast iron, cast steel, bearing steel, high carbon steel, chrome-nickel alloy, bronze, brass, tile, ceramic. marble, jade and boneThese burrs are made of tungsten carbide steel for high hardness, high abrasion resistance and high heat resistanceFunctions The double-cut rotary cutter is designed for carving, shaping and for the removal of ination of edges or corners, burrs and excess materialCutter SetThere are total 10 pieces of double-cut burrs in different shapes, which you can use for many purposes. 3mm shank is suitable for many electric or pneumatic tools and machine toolsNew metal rotary jaw, strictly tested to ensure the best quality before shipment, safe to use