KYOCERA Turning Insert, Multi-Edge Tough, CNGA Insert, 433 Insert, Diamond, 1/2 in Inscribed Circle, 3/16 in Thickness, 12 Seat, Negative Rake, MET Chipbreaker, 3/64 in Corner Radius, 0.203 in Hole Dia, Manufacturer's Grade: KBN35M, ANSI Code: CNGA433S00730MET KBN35M, ISO Code: CNGA120412S01730ME-T KBN35M, 80 deg Included Angle, 0 deg Relief Angle, Neutral Cutting, CBN, MEGACOAT, Material Grade: H, For Use On: Hardened Materials