Titan USA TC29320 Roughing End Mills; Mill Diameter (Inch): 5/16; Mill Diameter (Decimal Inch): 0.3125; Number of Flutes: 4; Pitch: Fine; Length of Cut (Inch): 1/2; Length of Cut (Decimal Inch): 0.5000; Shank Diameter (Inch): 5/16; 0.3125; Shank Diam