pNitro Mechanics Drill, Heavy Duty Imperial, Series 350N, 932 in Drill Size Fraction, 02812 in Drill Size Decimal Inch, 334 in Overall Length, 214 in Cutting Depth, 2 Flutes, Spiral Flute, 214 in Flute Length, Round with 3Flats Shank, 135 deg Point, Split Point, HSS Cutting Edge, HSS, BlackGold, Applicable Materials Hard Metal and Stainless Steelp.