Monster Tool Company 7/8 x 1/2 100-Deg. 6FL Carbide Countersink, 67859, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials, Diameter: 7/8, Number of Flutes: 6, Single End, Right Hand Cut, Included Angle: 100 3 1/2, Material Base: Carbide, Material Construction: Brazed, Finish / Coating:, MPN: 67859, PKG QTY: 1 PC