Monster Tool Company 7/8 x 1/2 90-Deg. 3FL Carbide Countersink, 75198, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials, Diameter: 7/8, Number of Flutes: 3, Single End, Right Hand Cut, Included Angle: 90 3 1/2, Material Base: Carbide, Material Construction: Solid, Finish / Coating:, MPN: 75198, PKG QTY: 1 PC