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.#51622, Direction Up-cut, (D) diameter 3/16, (r) radius 3/64, (b) Cutting height 1/8, (D) shank 1/4, overall length (L) 2, type radius, flutes 1, 51622 Solid Carbide aluminum Cutting 3/64 radius edge X 3/16 dia x 1/8 x 1/4 shank ZRN coated Up-cut end mill