The Kyocera 170HC1 is a 1/2" diameter, 4 flute, high speed steel end mill with a 1" overall length. It has a center cutting design and a TiAlN coating for wear resistance when milling steel, stainless steel, cast iron, aluminum, and other non-ferrous metals. The end mill has a 30 degree helix angle and can be run at speeds up to 325 SFM. It is made in Japan by Kyocera and sold individually.