Pramet Turning Insert, CCMT Insert, 431 Insert, Diamond, 3 mm Maximum Depth of Cut, 12.7 mm Inscribed Circle, 4.76 mm Thickness, 12.9 mm Length, 12 Seat, Positive Rake, UR Chipbreaker, 0.4 mm Corner Radius, 5.6 mm Hole Dia, Manufacturers Grade: T5315, ANSI Code: CCMT 431-UR:T5315, ISO Code: CCMT 120404E-UR:T5315, 80 deg Included Angle, 7 deg Relief Angle, Carbide, Material Grade: H, M, P, For Use On: Hardened Steel, Stainless Steel and Steel