Seco, 00039978, Milling Insert, High Feed Single End, Series: HFM JHF180, OFER Insert, 070405 Insert, Octagon Shape, 17.9 mm Inscribed Circle, 4.76 mm Thickness, 17.9 mm Length, M16 Chipbreaker, 3 mm Corner Radius, Manufacturers Grade: T350M, ANSI Code: OFER070405TN-M16 T350M, ISO Code: 180ML160R300Z4-MEGA-64, Neutral Hand of Insert, Carbide, TiCN/Al2O3, Material Grade: C5, Cast Iron, Non-Ferrous Metals, Plastics and Tough-to-Machine Materials Material Application