Latrobe Chicago Screw Machine Drill, Heavy Duty, Series: 159, Imperial, #47 - Wire, 0.0785 in. Drill - Decimal Inch, 1-11/16 in. Overall Length, 3XD Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 11/16 in. Flute Length, 0.0785 in. Diameter x 1 in. Long, Straight Shank, 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