Mitsubishi Materials USA Corp Turning Insert, SNMG Insert, 431 Insert, Squared, 1/2 in Inscribed Circle, 0.187 in Thickness, 1/2 in Width, 1/2 in Length, MA Chipbreaker, 0.016 in Corner Radius, 5.16 mm Hole Dia, Manufacturer's Grade: US735, ANSI Code: SNMG431MA US735, ISO Code: SNMG120404-MA US735, 90 deg Included Angle, 0 deg Relief Angle, Neutral Cutting, Carbide, CVD Coated, For Use On: Stainless Steel