Sandvik Coromant Threading Insert, Series: CoroThread 266, 266RL Insert, 22 Insert, Triangular Shape, Internal Thread, Acme Thread Standard, 6 Threads per Inch, 1/2 in Inscribed Circle, 0.219 in Thickness, ANSI Code: 266RL-22AC01A060M 1135, ISO Code: 266RL-22AC01A060M 1135, A Chipbreaker, Positive Rake, 60 deg Included Angle, Manufacturers Grade: 1135, Right Hand Cutting Direction, Carbide, TiCrAlN/TiN, Material Grade: H, K, M, N, P, S