Iscar Laydown Threading Insert, Series: ISCARTHREAD, 16ER Insert, External Thread, Acme Thread Standard, 8 Threads per Inch, 3/8 in Inscribed Circle, 0.143 in Thickness, ISO Code: 16ER 8 ACME, Manufacturer's Grade: IC908, Right Hand Cutting Direction, Carbide, PVD-TiAlN Coated