Sandvik Coromant Threading Insert, Series: T-Max U-Lock, L166.0L Insert, 11 Insert, Triangular, Internal, Whitworth, 14, 1/4 in Inscribed Circle, 1/8 in Thickness, ANSI Code: L166.0L-11WH01-140 1020, ISO Code: L166.0L-11WH01-140 1020, A Chipbreaker, 60 deg Included Angle, Manufacturers Grade: 1020, Left Hand Cutting, Carbide, TiN, Material Grade: H, K, M, N, P, S