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... 3/8" Mill Diameter 1-1/8" Length of Cut 3/8" Shank Diameter 2-15/16" Overall Length 4 Flutes