The Kyocera 170HF9 is a 1/2" diameter, 4 flute, high feed end mill made of micrograin carbide with TiAlN coating. It has a 1-1/2" LOC and can be run at speeds up to 500 SFM. The end mill features variable helix flutes to reduce harmonics and chatter and is designed for high feed milling in steel, stainless steel, and cast iron. It has a tolerance of +/- .0005" and achieves surface finishes to 32 microinch Ra. The end mill is made in Japan.