KYOCERA Indexable Turning Insert, 2-Cutting Edge, Series: ISOI, CCMT Insert, #21505 Insert, Diamond Shape, 1/4 in Inscribed Circle, 0.0937 in Thickness, 06 Seat, Positive Rake, GK Chipbreaker, 0.0079 in Corner Radius, 0.1102 in Diameter Hole, Manufacturer's Grade: CA5525, ANSI Code: CCMT21505GKCA5525, ISO Code: CCMT060202GK, 80 deg Included Angle, 7 deg Relief Angle, Neutral Cutting Direction, Carbide, CVD-TiCN/Al2O3/TiN Coated, Material Grade: P, For Use On: Carbon/Alloy Steel