Dormer 5969115 A221 Center Drill Double End Combined Drill and Countersink, 5/16 in Drill - Fraction, 0.3125 in Drill - Decimal Inch, 60 deg Included Angle, 118 deg Point Angle, HSS-E, Bright

Dormer Combined Drill and Countersink, Center Drill Double End, Series: A221, 5/16 in Drill Size - Fraction, 0.3125 in Drill Size - Decimal Inch, #8 Point Dia, 3/4 in Body Dia, 3-1/2 in Overall Length, 5/16 in Flute Length, 5/16 in Shank, Straight Shank, 118 deg Point, 60 deg Included Angle, Right Hand Cutting, 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