Ceratizit 5877432503 Indexable Square-Shoulder End Mills; Maximum Depth of Cut (Decimal Inch): 0.2360 ; Cutter Style: C491 ; Shank Type: Weldon Flat ; Shank Diameter (Decimal Inch): 1.2500 ; Shank Diameter (Inch): 1-1/4 ; Insert Holding Method: Screw