Monster Tool Company 1 x 1/2 120-Deg. 4FL Carbide Countersink, 67719, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials, Diameter: 1, Number of Flutes: 4, Single End, Right Hand Cut, Included Angle: 120 3 1/2, Material Base: Carbide, Material Construction: Brazed, Finish / Coating:, MPN: 67719, PKG QTY: 1 PC