MA Ford 78018701 3/16" 6-FLute, Chatterless Carbide Countersink 60-Degree, Diameter: 3/16, Shank Diameter: 3/16, Overall Length: 1-1/2, Included Angle Degree: 60, Base Material: Carbide (steel shanks on tools 3/8 diameter and larger), Number of Flutes: 6, MPN: 78018701, PKG QTY: 1 PC