Pramet Turning Insert Pramet, SNMM Insert, 644 Insert, Squared, 0.512 in Maximum Depth of Cut, 3/4 in Inscribed Circle, 1/4 in Thickness, 3/4 in Width, 3/4 in Length, 19 Seat, Negative Rake, 923 Chipbreaker, 1/16 in Corner Radius, 0.313 in Hole Dia, Manufacturers Grade: T8345, ANSI Code: SNMM 644-923:T8345, ISO Code: SNMM 190616S-923:T8345, 90 deg Included Angle, 0 deg Relief Angle, Carbide, Material Grade: K, M, P, S, For Use On: Stainless Steel, Steel, Cast Iron and Titanium/Super Alloys