Item #: 08272916Brand: Made in USAModel #: Features and Benefits High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials. Bright provides a smooth, polished finish on the tool. It increases chip flow in softer materials such as aluminum, wood and plastic. Product Specifications Fastener Type Compatibility Socket-Head Cap Screw Counterbore Diameter (Decimal Inch) 0.7550 Fastener Size Compatibility (Inch) 1/2 Fastener Size Compatibility (Decimal Inch) 0.5000 Counterbore Material High Speed Steel Finish/Coating Bright Standard or Oversize Pilot Standard Shank Diameter (Inch) 1/2 Shank Diameter (Decimal Inch) 0.5000 Number of Flutes 4 Aircraft-Style No Pilot Diameter (Inch) 1/2 Pilot Diameter (Decimal Inch) 0.5000 Shank Type Straight Overall Length (Inch) 7-1/2 Cutting Direction Forward