Drill America Jobber Length Drill Bit, Heavy Duty Premium Quality, Series: D/ACO, Imperial, 21/64 in Drill - Fraction, 0.3281 in Drill - Decimal Inch, 4-5/8 in Overall Length, 3-5/16 in Cutting Depth, 2 Flutes, 3-5/16 in Flute Length, Round Shank, 135° Point, Split Point, Right Hand Cutting Direction, M42 HSS-Co 8 Cutting Edge, M42 HSS-Co 8, Gold, Applicable Materials: Stainless Steel, Inconel and Titanium Drill America D/ACO21/64 Heavy Duty Premium Quality Jobber Length Drill Bit, 21/64 in Drill - Fraction, 0.3281 in Drill - Decimal Inch, 135° Point