Sandvik Coromant Threading Insert, Series: CoroThread 266, 266RL Insert, 16 Insert, Triangular, Internal, M, 1 mm Pitch, 9.525 mm Inscribed Circle, 3.969 mm Thickness, ANSI Code: 266RL-16MM01F100E 1135, ISO Code: 266RL-16MM01F100E 1135, F Chipbreaker, Negative Rake, 60 deg Included Angle, Manufacturers Grade: 1135, Right Hand Cutting, Carbide, PVD-TiCrAlN+TiN Coated, Material Grade: H, K, M, N, P, S