Latrobe Chicago Screw Machine Drill, Heavy Duty, Series: 159, Imperial, #9 - Wire, 0.196 in. Drill - Decimal Inch, 2-1/4 in. Overall Length, 3XD Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 1-3/16 in. Flute Length, 0.196 in. Diameter x 1.0625 in. Long, Ank, Straight Shank K, 135 Degree Point, Split Point, Right Hand Cutting Direction, HSS Cutting Edge, Black Vapor Oxide, Applicable Materials: Alloy Steel, Carbon Steel, Cast Iron, and Tool Steel