Titan USA TE66204 Roughing End Mills; Mill Diameter (Inch): 1/4; Mill Diameter (Decimal Inch): 0.2500; Number of Flutes: 4; Pitch: Fine; Length of Cut (Inch): 5/8; Length of Cut (Decimal Inch): 0.6250; Shank Diameter (Inch): 0.3750; 3/8; Shank Diamet