Pramet Turning Insert Pramet, VBMT Insert, 221 Insert, Diamond, 2 mm Maximum Depth of Cut, 6.35 mm Inscribed Circle, 1/8 in Thickness, 11.1 mm Length, 11 Seat, Positive Rake, FM Chipbreaker, 0.4 mm Corner Radius, 2.9 mm Hole Dia, Manufacturers Grade: T8315, ANSI Code: VBMT 221-FM T8315, ISO Code: VBMT 110304E-FM T8315, 35 deg Included Angle, 5 deg Relief Angle, Carbide, Material Grade: H, K, M, N, P, S, For Use On: Hardened Steel, Cast Iron, Stainless Steel, Aluminum, Steel and Titanium/Super Alloys