Rotary Rasp, Rotary Tool Accessory Type Rotary Rasp, Bit Material Alloy Steel, Shape Ball, Cone, Cylinder, Oval, Max. Speed 2,500 RPM, Shank Diameter 1/4 in, Mount Type Mounted, Overall Length 2 in, Burr Diameter 5/8 in, Head Length 1 1/8 in, 1 3/8 in, Head Width 5/8 in, Material Application Bronze, Iron, Mild Steel, Plastic, Soft Metal, Wood