Walter Turning Insert, Series: Tiger-tec Silver, DNMG Insert, 431 Insert, Rhombic, 1.5 mm Maximum Depth of Cut, 12.7 mm Inscribed Circle, 4.76 mm Thickness, 15 Seat, Negative Rake, FM5 Chipbreaker, 0.4 mm Corner Radius, Manufacturers Grade: WMP20S, ANSI Code: DNMG431-FM5 WMP20S, ISO Code: DNMG150404-FM5 WMP20S, 55 deg Included Angle, 0 deg Relief Angle, Neutral Cutting, Carbide, CVD-TiCN+Al2O3 Coated, Material Grade: M, P, For Use On: Stainless Steel and Steel