Titanium Nitride Coated Roughing End Mill Best for heavy cuts, deep slotting & pocketing applications. TiN coating provides an ability to increase machine speeds by 10 to 20% vs uncoated tools. Excellent in all steels, and nonferrous materials. Great for General Purpose Use Features include... 9/16" Mill Diameter 1-3/8" Length of Cut 1/2" Shank Diameter 3-3/8" Overall Length 4 Flutes