The Kyocera 170HT9 is a 1/2" diameter, 4 flute, high speed steel end mill with a TiAlN coating. It has a 1-1/2" overall length and a 1/2" shank diameter. The end mill features a 30 degree helix angle and can be run at speeds up to 325 SFM. It is well-suited for slotting, profiling, contouring, and facing in both ferrous and non-ferrous materials. The TiAlN coating provides high hardness, heat resistance, and lubricity. This is a high quality end mill for moderate to heavy duty milling applications.