Chicago-Latrobe Taper Length Drill, General Purpose, Series: 120, Drill #74 - Wire, 0.0225 in - Decimal Inch, 1-1/2 in Overall Length, 5/16 in Depth of Cut, 2 Flutes, Spiral Flute, 5/16 in Flute Length, 0.0225 in, Straight Shank, 118 o.. g Radial Point, Radial Point, Point Point, Right Hand Cutting Direction, HSS Cutting Edge, Black Oxide, Applicable Materials: Alloy Steel, Carbon Steel and Cast Iron