Designed to route a finished appearance into aluminum, brass, copper & non-ferrous metals in one pass these Amana Tool end mills utilize the ‘O’ flute up-cut design for a super-clean finish. By combining the up-cut design along with the common 45° chamfer, you can maximize your efficiency by routing one single pass.Excellent for cutting: Aluminum Aluminum 5052 Brass Copper Fomex® with Aluminum Face Gold Non-Ferrous Metals Silver Acrylonitrile-Butadiene-Styrene (ABS) Lexan™ The ZrN coating creates a harder and tougher cutting ceramic over carbide edge allowing for a prolonged cutting edge life and helps to prevent the build-up/galling of material in the flutes while cutting. Amana’s combination end mill/router bits offer the flexibility to cut the radius along with the proven performance of the up-cut design for superior chip ejection.