Kyocera THD89171 Indexable Insert Drills; Drill Style: DRZ; Maximum Drill Diameter (mm): 29.01; Drill Diameter (mm): 29.01; Maximum Drill Depth (mm): 87.12; Shank Type: Straight-Cylindrical; Shank Diameter (Inch): 1; Shank Diameter (Decimal Inch): 1.