Latrobe Chicago Screw Machine Drill, Heavy Duty, Series: 159, Imperial, #29 - Wire, 0.136 in. Drill - Decimal Inch, 1-15/16 in. Overall Length, 3XD Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 15/16 in. Flute Length, 0.136 in. Flute Length, Straight Shank, 13.5 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