Threading Insert Pramet, Full Profile Negative, TN Insert, 22 Insert, Triangular, External, TR, 7 mm Pitch, 1/2 in Inscribed Circle, 0.185 in Thickness, 0.866 in Length, ISO Code: TN 22EN700TR T8030, 60 deg Included Angle, Manufacturers Grade: T8030, Neutral Cutting, Carbide, PVD Coated, Material Grade: H, K, M, N, P, S