Monster Tool Company 3/8 90-Deg. 4FL DE Carbide Countersink w/ Drill PT, 67794, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials. Economical double cutting ends., Diameter: 3/8, Number of Flutes: 4, Double End, Right Hand Cut, Included Angle: 90 2-1/2 3/8, Material Base: Carbide, Material Construction: Solid, Finish / Coating:, MPN: 67794, PKG QTY: 1 PC