Monster Tool Company 3/16 90-Deg. 3FL Carbide Countersink, 67637, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials, Diameter: 3/16, Number of Flutes: 3, Single End, Right Hand Cut, Included Angle: 90 2 3/16, Material Base: Carbide, Material Construction: Solid, Finish / Coating:, MPN: 67637, PKG QTY: 1 PC