YG-1 Screw Machine Drill, Series: D4146, Imperial, 21/64 in Drill - Fraction, 0.3281 in Drill - Decimal Inch, 2-15/16 in Overall Length, 1-11/16 in Cutting Depth, Right Spiral Flute, 1-11/16 in Flute Length, 21/64 in Shank, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, M42 HSS-Co 8 Cutting Edge, M42 HSS-Co 8, TiN, Applicable Materials: Alloyed/Non-Alloyed, Cast Steel, Gray Cast Iron, Graphite, Malleable Cast Iron and Steel