Cully Jobber Drill Bit, Heavy Duty, Imperial, F Drill - Letter, 0.257 in Drill - Decimal Inch, 4-1/8 in Overall Length, 2-7/8 in Cutting Depth, 2-7/8 in Flute Length, 0.257 in Shank, 135 deg Point, Split Point, HSS Cutting Edge, HSS, Oxide Treated