Chicago-Latrobe - Screw Machine Drill, General Purpose, Series: 157, Imperial, A Drill - Letter, 0.234 in. Drill - Inch Decimal, 2-7/16 in. Overall Length, 3XD Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 1-5/16 in. Flute Length, 0.234 in. Diameter x 1.125 in. L Shif. Straight Shank., 118 Degree Point, Radial Point, Right Hand Cutting Direction, HSS Cutting Edge, Bright, Applicable Materials: Alloy Steel, Carbon Steel, Cast Iron and Non-Ferrous Materials