Pramet Turning Insert Pramet, VBMT Insert, 331 Insert, Diamond, 2 mm Maximum Depth of Cut, 9.525 mm Inscribed Circle, 3/16 in Thickness, 16.6 mm Length, 16 Seat, Positive Rake, FM Chipbreaker, 0.4 mm Corner Radius, 4.5 mm Hole Dia, Manufacturers Grade: T8315, ANSI Code: VBMT 331-FM T8315, ISO Code: VBMT 160404E-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