Sandvik Coromant Threading Insert, Series: T-Max U-Lock, R166.0L Insert, 11 Insert, Triangular, Internal, NPT, 18, 1/4 in Inscribed Circle, 1/8 in Thickness, ANSI Code: R166.0L-11NT01F180 1020, ISO Code: R166.0L-11NT01F180 1020, F Chipbreaker, 60 deg Included Angle, Manufacturers Grade: 1020, Right Hand Cutting, Carbide, PVD-TiN Coated, Material Grade: H, K, M, N, P, S