Chicago-Latrobe - Workman's Length Drill Bit, General Purpose, Series: 150, Metric/Imperial, 0.581 in Drill - Metric, 0.5807 in Drill - Decimal Inch, 6.654 in Overall Length, 5XD Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 4.488 in Flute Length, Diameter x 2.165 in. L-Shank, 0.058 in. Straight Shank, 118 Degree Point, Radial Point, Right Hand Cutting Direction, HSS Cutting Edge, No Step Coolant, HSS, Black Oxide, Applicable Materials: Carbon Steel and Cast Iron