Chicago-Latrobe Screw Machine Drill, Heavy Duty, Series: 559, Imperial, 15/64 in Drill - Fraction, 0.2344 in Drill - Decimal Inch, 2-7/16 in Overall Length, 3XD Cutting Depth, 2 Flutes, Right Spiral Flute, 1-5/16 in Flute Length, 15/64 in Dia x 1-1/8 in L Shank, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, M42 HSS-Co 8 Cutting Edge, M42 HSS-Co 8, Straw, Applicable Materials: Alloy Steel, Carbon Steel, Cast Iron and Tool Steel