Chicago-Latrobe - Screw Machine Drill, Heavy Duty, Series: 559-TN/2559, Imperial, 3/8 Inch - Fraction, 0.375 Inch Bore - Decimal Inch, 3-1/8 Overall Length, 1-13/16 Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 1-13/16 Inch Flute Length, 3/8 Inch Diameter, 1-5/16 Inch Shank, Straight Shank, 135 Degree Point, Split Point, Right Hand Cutting Direction, M42 HSS-Co 8 Cutting Edge, M42 HSS-Co 8, TiN Coating, Applicable Materials: Carbon Steel, Cast Iron and Tool Steel