Sandvik Coromant Turning Insert, Series: T-Max P, CNMM Insert, 643 Insert, Diamond, 12 mm Maximum Depth of Cut, 3/4 in Inscribed Circle, 1/4 in Thickness, 19 Seat, Negative Rake, PR Chipbreaker, 0.047 in Corner Radius, 0.312 in Hole Dia, Manufacturers Grade: 4325, ANSI Code: CNMM 643-PR 4325, ISO Code: CNMM 19 06 12-PR 4325, 80 deg Included Angle, 0 deg Relief Angle, Neutral Cutting, Carbide, TiCN/Al2O3/TiN, Material Grade: K, P, For Use On: Cast Iron and Steel