Monster Tool Company 5/16 4FL 90-Degree Carbide Drill Mill AlTiN, 62431, Five in one tool - Chamfering, Countersinking, Drilling, Side Milling, and Spotting, Diameter: 5/16, Number of Flutes: 4, Single End,Right Hand Cut, Included Angle: 90-Degree, Overall Length: 2-1/2, Length of Cut: 13/16, Shank Diameter: 5/16, Material Base: Carbide, Finish / Coating: AlTiN, MPN: 62431, PKG QTY: 1 PC