Titan USA TC29916 Roughing End Mills; Mill Diameter (Inch): 1/4; Mill Diameter (Decimal Inch): 0.2500; Number of Flutes: 4; Pitch: Fine; Length of Cut (Inch): 3/4; Length of Cut (Decimal Inch): 0.7500; Shank Diameter (Inch): 1/4; 0.2500; Shank Diamet