Tool-Flo 1271046 Helical Flute Thread Mills; Material: Carbide ; Thread Size (mm): M24x3 - M25x3 ; Thread Type: Internal ; Shank Diameter (Decimal Inch): 0.6250 ; Cutting Diameter (Decimal Inch): 0.6250 ; Length Of Cut (Decimal Inch - 4 Decimals): 2.