Seco Turning Insert, CNMG Insert, 120408 Insert, Diamond Shape, 5.25 mm Maximum Depth of Cut, 12.7 mm Inscribed Circle, 4.76 mm Thickness, 12 Seat, Negative/Positive Rake, M3 Chipbreaker, 0.8 mm Corner Radius, 5.15 mm Diameter Hole, Manufacturers Grade: TP40, ANSI Code: CNMG432-M3(O) TP40, ISO Code: CNMG120408-M3(O) TP40, 80 deg Included Angle, 0 deg Relief Angle, Neutral Cutting Direction, Carbide, TiC/TiCN/TiN, Material Grade: M, P, For Use On: Stainless Steel and Steel