Monster Tool Company 5/8 x 3/8 90-Deg. 4FL Carbide Countersink, 67707, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials, Diameter: 5/8, Number of Flutes: 4, Single End, Right Hand Cut, Included Angle: 90 2-1/2 3/8, Material Base: Carbide, Material Construction: Brazed, Finish / Coating:, MPN: 67707, PKG QTY: 1 PC