Description:brand new and high quality Material: Tungsten steel YG8 Color: as shown in pic Color: as shown in pic Features: Cutting edge diameter: 6-12mm Shank diameter: 6mm(1/4") Total length: 45-65mm Groove: Double Rotary A: cylinder shape C: cylindrical ball for head D: spherical F: curved round for head Usage: Only can be one side grinding, can not back and forth grinding Features: The carbide alloy rotary file use is extremely widespread, applies in the mold processing manufacture. Machine parts bevel edge, inverted round and trench processing. Can be processed cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals, and marble, jade, bone and other non-metallic. Widely used in machinery, automobile, shipbuilding, chemical, craft sculpture ect.. Good processing quality, finish high, long service life. Can process a variety of high-precision mold cavity. Easy to grasp, easy to use, safe and reliable. Reduces the arduous manual labor greatly, reduce the cost of production. The carbide alloy rotary file main supporting the use of electric tool or the use of electric tool or the pneumatic tool(may also install on machine tool) Quantity: 8pcs Note: Due to the difference between different monitors, the picture may not reflect the actual colorof the item. Thank you