Ceratizit 5872732504 Indexable Square-Shoulder End Mills; Maximum Depth of Cut (Decimal Inch): 0.3150 ; Cutter Style: C490 ; Shank Type: Weldon Flat ; Shank Diameter (Decimal Inch): 1.2500 ; Shank Diameter (Inch): 1-1/4 ; Insert Holding Method: Screw