Seco Threading Insert, Laydown, Series: Snap-Tap®, 27NR Insert, 27 Insert, Internal, UN, 4, 15.9 mm Inscribed Circle, 6.2 mm Thickness, 27 mm Length, ANSI Code: 27NR4UN CP500, ISO Code: 27NR4UN CP500, 0.45 mm Corner Radius, 60 deg Included Angle, Manufacturer's Grade: CP500, Right Hand Cutting, Carbide, PVD-TiAlN+TiN Coated, Material Grade: M