OSG Drill Bit, Jobber Length Standard, Series: 200, Imperial, 5/16 in Drill - Fraction, 7.94 mm Drill - Metric, 0.3125 in Drill - Decimal Inch, 71.4 mm Overall Length, 2 Flutes, Straight Flute, 41.3 mm Flute Length, 7-15/16 in Shank, Straight Shank, 140 deg Point, 4-Facet Point, Right Hand Cutting, Carbide Cutting Edge, Applicable Materials: Low Carbon Steel and Cast Iron, General Machine, Through Coolant (Yes/No): No, Carbide, Uncoated