Sandvik Coromant Threading Insert, Series: CoroThread 266, 266LL Insert, 16 Insert, Triangular, Internal, 55 deg Partial Profile, 8 to 14, 3/8 in Inscribed Circle, 0.156 in Thickness, ANSI Code: 266LL-16VW01A002M 1125, ISO Code: 266LL-16VW01A002M 1125, A Chipbreaker, Negative Rake, 0.009 in Corner Radius, 60 deg Included Angle, Manufacturers Grade: 1125, Left Hand Cutting, Carbide, TiCrAlN/TiAlN, Material Grade: H, K, M, N, P, S