Pramet Turning Insert Pramet, WNMG Insert, 331 Insert, Trigon, 3 mm Maximum Depth of Cut, 3/8 in Inscribed Circle, 4.76 mm Thickness, 6 Seat, Negative Rake, SM Chipbreaker, 0.4 mm Corner Radius, 3.81 mm Hole Dia, Manufacturers Grade: T7335, ANSI Code: WNMG 331-SM T7335, ISO Code: WNMG 060404E-SM T7335, 80 deg Included Angle, 0 deg Relief Angle, Carbide, Material Grade: M, P, S, For Use On: Stainless Steel, Steel and Titanium/Super Alloys