Seco Turning Insert, CNMG Insert, 190608 Insert, Diamond Shape, 12 mm Maximum Depth of Cut, 19.05 mm Inscribed Circle, 6.35 mm Thickness, 19 Seat, Negative/Positive Rake, M3 Chipbreaker, 0.8 mm Corner Radius, 7.92 mm Diameter Hole, Manufacturer's Grade: TP2501, ANSI Code: CNMG642-M3 TP2501, ISO Code: CNMG190608-M3 TP2501, 80 deg Included Angle, 0 deg Relief Angle, Neutral Cutting Direction, Carbide, CVD-TiCN+Al2O3 Coated, Material Grade: P, For Use On: Steel