Carbide Bur, Cylindrical Shape, Cutter Dia. (In.) 3/4, Shank Size (In.) 1/4, Overall Length (In.) 2-3/4, Length of Cut (In.) 1, Double Cut, Max. RPM 33, 000, Steel Shank Material, Trade Number SA-7, Metal Deburring Carbide Burs and SetsMachine-ground, tool-built to exacting tolerances of concentricity, size, and shape.Double CutRight- and left-hand helical flutes combine to produce a chisel-type cutting edge for faster penetration and stock removal. Creates a smooth finish on a wide variety of materials.