Monster Tool Company 1/2 x 3/8 100-Deg. 4FL Carbide Countersink, 67703, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials, Diameter: 1/2, Number of Flutes: 4, Single End, Right Hand Cut, Included Angle: 100 2-1/2 3/8, Material Base: Carbide, Material Construction: Brazed, Finish / Coating:, MPN: 67703, PKG QTY: 1 PC