Chicago-Latrobe - Screw Machine Drill, Heavy Duty, Series: 159-TN/2159, Imperial, #7 Drill - Wire, 0.201 in Drill - Decimal, 2-1/4 in Overall Length, 1-3/16 in Depth of Cut, 2 Flute, Right Hand Spiral Flute, 1-3/16 in Flute Length, 0.201 in Diameter x 1. 0625 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