Seco Turning Insert, DNMG Insert, 150408 Insert, Diamond Shape, 5.25 mm Maximum Depth of Cut, 12.7 mm Inscribed Circle, 4.76 mm Thickness, 15 Seat, Negative/Positive Rake, M3 Chipbreaker, 0.8 mm Corner Radius, 5.15 mm Diameter Hole, Manufacturer's Grade: TP2501, ANSI Code: DNMG432-M3 TP2501, ISO Code: DNMG150408-M3 TP2501, 55 deg Included Angle, 0 deg Relief Angle, Neutral Cutting Direction, Carbide, CVD-TiCN+Al2O3 Coated, Material Grade: P, For Use On: Steel