Chicago-Latrobe - Screw Machine Drill, Heavy Duty, Series: 159-TN/2159, Imperial, 27/64 in - Fraction, 0.4219 in - Decimal Inch, 3-3/8 in Overall Length, 2 in Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 2 in Flute Length, 27/64 in Dia x 1-3 in Dia x 1-3 in /8 in L of 8 Shank, Straight Shank, 135 Degree Point, Parting Point, Right Hand Cutting Direction, HSS Cutting Edge, TiN Coated, Applicable Materials: Alloy Steel, Carbon Steel, Cast Iron and Tool Steel