Widia 5578406 Drill Bodies; Maximum Drill Depth: 2.2770 in; Drill Depth by Diameter Ratio: 3xD; Maximum Depth of Cut (Decimal Inch): 2.2770; Shank Type: Weldon Shank; Shank Diameter (Inch): 1; Shank Diameter (Decimal Inch): 1.0000; Cutting Direction: