Pramet Turning Insert, CNMG Insert, 543 Insert, Diamond, 5.5 mm Maximum Depth of Cut, 15.875 mm Inscribed Circle, 6.35 mm Thickness, 16.1 mm Length, 16 Seat, Negative Rake, SM Chipbreaker, 1.2 mm Corner Radius, 6.35 mm Hole Dia, Manufacturers Grade: T9315, ANSI Code: CNMG 543-SM:T9315, ISO Code: CNMG 160612E-SM:T9315, 80 deg Included Angle, 0 deg Relief Angle, Carbide, Al2O3, Material Grade: H, K, P, For Use On: Hardened Steel, Cast Iron and Steel