Pramet 6751703 Turning Insert, ANSI Code: CCGT 431F-AL:HF7, CCGT Insert, Material Grade: H, K, M, N, S, 431 Insert, Diamond Shape, 12 Seat, Positive Rake, For Use On Aluminum, Cast Iron, Hardened Steel, Stainless Steel and Titanium/Super Alloys, Carbide