M-42 Cobalt Roughing End Mill with Coarse Teeth Best for heavy cuts, deep slotting & pocketing applications, center-cutting for plunge cuts. Excellent in all steels, and nonferrous materials. Features include... 3/4" Mill Diameter 4-1/8" Length of Cut 3/4" Shank Diameter 6-3/8" Overall Length 4 Flutes