Monster Tool Company 1/2 100-Deg. 4FL DE Carbide Countersink, 67753, Designed for general purpose countersinking, chamfering and deburring in most ferrous and non-ferrous materials. Economical double cutting ends., Diameter: 1/2, Number of Flutes: 4, Double End, Right Hand Cut, Included Angle: 100 3 1/2, Material Base: Carbide, Material Construction: Solid, Finish / Coating:, MPN: 67753, PKG QTY: 1 PC