KYOCERA Cera-Notch Threading Insert, Partial Profile, KCT Insert, 3 Insert, External/Internal Thread, ISO/UN Thread Standard, 5 to 12 TPI Internal/6 to 20 TPI External Threads per Inch, 0.195 in Thickness, 0.885 in Length, ANSI Code: KCT3LPR1215, ISO Code: KCT3L PR1215, 0.007 in Corner Radius, 60 deg Included Angle, Manufacturer's Grade: PR1215, Left Hand Cutting Direction, Carbide, PVD-MEGACOAT