Chicago-Latrobe - Screw Machine Drill, Heavy Duty, Series: 559-TA, Imperial, 9/64 in - Fraction, 0.1406 in - Decimal Inch, 1-15/16 in Overall Length, 15/16 in Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 15/16 in Flute Length 9/64 in A x 1 in L-Shank, Straight Shank, 135 Degree Point, Split Point, Right Hand Cutting Direction, M42 HSS-Co 8 Cutting Edge, M42 HSS-Co 8, TiAlN Coating, Applicable Materials: Alloy Steel, Carbon Steel, Cast Iron and Tool Steel