Seco Turning Insert, CNMG Insert, 643 Insert, Diamond, 3/4 in Inscribed Circle, 6.35 mm Thickness, 19.3 mm Length, 19 Seat, Negative Rake, M3 Chipbreaker, 1.2 mm Corner Radius, 7.92 mm Hole Dia, Manufacturer's Grade: TP25, ANSI Code: CNMG643-M3, ISO Code: CNMG190612-M3, 80 deg Included Angle, 0 deg Relief Angle, Neutral Cutting, Carbide, CVD-TiCN/Al2O3 Coated, For Use On: Steel, Stainless Steel and Cast Iron