Sandvik Coromant Turning Insert, 2-Sided Basic Shape, Series: T-Max, RNGN Insert, 45 Insert, Round, 0.126 in Maximum Depth of Cut, 1/2 in Inscribed Circle, 5/16 in Thickness, 12 Seat, Negative Rake, 1/4 in Corner Radius, Manufacturers Grade: 650, ANSI Code: RNG45T0320 650, ISO Code: RNGN120700T01020 650, 0 deg Relief Angle, Neutral Cutting, Ceramic, Uncoated, Material Grade: H, K, S, For Use On: Cast Iron, Hardened Materials and Heat Resistant Super Alloys