Cully™ Jobber Drill Bit, Heavy Duty Trinado, Imperial, 1/4 in Drill - Fraction, 0.25 in Drill - Decimal Inch, 4 in Overall Length, 2-3/4 in Cutting Depth, 2-3/4 in Flute Length, 1/4 in Shank, Flat Shank, 135 deg Point, Split Point, HSS Cutting Edge, HSS, Black Oxide