Chicago-Latrobe - Screw Machine Drill, Heavy Duty, Series: 159-TN/2159, Imperial, #47 Drill - Wire, 0.0785 in Drill - Decimal, 1-11/16 in Overall Length, 11/16 in Depth of Cut, 2 Flutes Right Hand Spiral, 11/16 in Flute Length, 0.0785 in Diameter, 1 in L-Shank, Straight Shank, 135 Degree Point, Split Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS Coating, Applicable Materials: Alloy Steel, Carbon Steel, Cast Iron and Tool Steel