Pramet Turning Insert, SNMM Insert, 643 Insert, Squared, 0.394 in Maximum Depth of Cut, 3/4 in Inscribed Circle, 1/4 in Thickness, 3/4 in Width, 3/4 in Length, 19 Seat, Negative Rake, OR Chipbreaker, 3/64 in Corner Radius, 0.313 in Hole Dia, Manufacturers Grade: T8330, ANSI Code: SNMM 643-OR:T8330, ISO Code: SNMM 190612E-OR:T8330, 90 deg Included Angle, 0 deg Relief Angle, Carbide, Material Grade: H, K, M, N, P, S, For Use On: Stainless Steel, Steel, Titanium and Super Alloys, Cast Iron, Aluminum and Hardened Steel