YG-1 Screw Machine Drill, Series: D2146, Imperial, 7/16 in Drill - Fraction, 0.4375 in Drill - Decimal Inch, 3-7/16 in Overall Length, 2-1/16 in Cutting Depth, Right Spiral Flute, 2-1/16 in Flute Length, 7/16 in Shank, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, M42 HSS-Co 8 Cutting Edge, M42 HSS-Co 8, Bright, Applicable Materials: Alloyed/Non-Alloyed, Cast Steel, Gray Cast Iron, Graphite, Malleable Cast Iron and Steel