The Kyocera 170HD5 is a 5/8" diameter, 4 flute, high speed steel end mill with a 1-1/2" overall length. It has a 1/2" shank diameter and features TiAlN coating for increased hardness and heat resistance. This end mill is designed for high speed machining in a variety of materials including alloy steels, tool steels, cast iron, stainless steels, titanium alloys, nickel alloys, and non-ferrous metals. It can be run at speeds up to 325 SFM. The 170HD5 end mill is made in Japan by Kyocera and sold individually.