Sandvik Coromant Turning Insert, 1-Sided Basic Shape, Series: CoroTurn TR, TR-DC Insert, 1308 Insert, Rhombic, 0.024 in Maximum Depth of Cut, 0.433 in Inscribed Circle, 0.2175 in Thickness, 13 Seat, Positive Rake, 0.0312 in Corner Radius, 0.1456 in Hole Dia, Manufacturers Grade: 7025, ANSI Code: TR-DC1308S01020F 7025, ISO Code: TR-DC1308S01020F 7025, 55 deg Included Angle, 7 deg Relief Angle, Neutral Cutting, Carbide, Uncoated, Material Grade: H, For Use On: Hardened Steel