Dormer Jobber Length Drill, 5/16 in Drill - Fraction, 0.3125 in Drill - Decimal Inch, 118 deg Point, High Speed Steel, Steam Tempered, Imperial, 4-1/2 in Overall Length, 3-3/16 in Cutting Depth, 2 Flutes, 3-3/16 in Flute Length, High Speed Steel Cutting Edge