Sandvik Coromant Threading Insert, Series: CoroThread 266, 266RG Insert, 16 Insert, Triangular, External, 3 mm Pitch, 3/8 in Inscribed Circle, ANSI Code: 266RG-160000-300-BG H13A, ISO Code: 266RG-160000-300-BG H13A, BG Chipbreaker, Neutral Rake, 60 deg Included Angle, Manufacturers Grade: H13A, Right Hand Cutting, Carbide, Uncoated, Material Grade: K, M, N, P, S