Dormer Combined Drill and Countersink, Center Drill Double End, Series: A221, 3/16 in Drill - Fraction, 0.1875 in Drill - Decimal Inch, #5 Point Diameter, 7/16 in Diameter Body, 2-3/4 in Overall Length, 3/16 in Flute Length, 7/16 in Shank, Straight Shank, 118 deg Point, 60 deg Included Angle, Right Hand Cutting Direction, HSS-E Cutting Edge, HSS-E, Bright, Applicable Materials: Alloy Steel, Aluminum, Aluminum Alloy, Brass, Bronze, Carbon Steel, Cast Iron, Cermet, Copper, Copper Alloy, Free Machining Stainless Steel, Hardened Steel, Magnesium and Nickel