Sandvik Coromant Threading Insert, Series: T-Max U-Lock, L166.0L Insert, 11 Insert, Triangular Shape, Internal Thread, 60 deg Partial Profile Thread Standard, 0.039 to 0.079 in Pitch, 12 to 24 Threads per Inch, 1/4 in Inscribed Circle, 1/8 in Thickness, ANSI Code: L166.0L-11VM01-001 1020, ISO Code: L166.0L-11VM01-001 1020, A Chipbreaker, 0.002 in Corner Radius, 60 deg Included Angle, Manufacturers Grade: 1020, Left Hand Cutting Direction, Carbide, TiN, Material Grade: H, K, M, N, P, S