YG-1 Screw Machine Drill, Series: D1118, Imperial, 5/16 in Drill - Fraction, 0.3125 in Drill - Decimal Inch, 2-13/16 in Overall Length, 1-5/8 in Cutting Depth, Right Spiral Flute, 1-5/8 in Flute Length, 5/16 in Shank, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, M2 HSS Cutting Edge, M2 HSS, Bright, Applicable Materials: Alloyed/Non-Alloyed, Cast Steel, Gray Cast Iron, Graphite, Malleable Cast Iron and Steel