Widia 5578413 Drill Bodies; Maximum Drill Depth: 3.0270 in; Drill Depth by Diameter Ratio: 4xD; Maximum Depth of Cut (Decimal Inch): 3.0270; Shank Type: Weldon Shank; Shank Diameter (Inch): 1; Shank Diameter (Decimal Inch): 1.0000; Cutting Direction: