Monster Tool Company 5/8 x 3/8 90-Deg. 3FL Carbide Countersink, 67657, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials, Diameter: 5/8, Number of Flutes: 3, Single End, Right Hand Cut, Included Angle: 90 2-3/4 3/8, Material Base: Carbide, Material Construction: Brazed, Finish / Coating:, MPN: 67657, PKG QTY: 1 PC