KYOCERA Turning Insert, CCGT Insert, 21505 Insert, Diamond, 1/4 in Inscribed Circle, 3/32 in Thickness, Positive Rake, U Chipbreaker, 0.008 in Corner Radius, 0.11 in Hole Dia, Manufacturer's Grade: PR930, ANSI Code: CCGT21505FLU PR930, ISO Code: CCGT060202FL-U PR930, 80 deg Included Angle, 7 deg Relief Angle, Left Hand Cutting, Carbide, PVD-TiCN Coated, Material Grade: P, For Use On: Steel