Pramet Turning Insert Pramet, CCGT Insert, 21.51 Insert, Diamond, 3.5 mm Maximum Depth of Cut, 6.35 mm Inscribed Circle, 2.38 mm Thickness, 6.4 mm Length, 6 Seat, Positive Rake, AL Chipbreaker, 0.4 mm Corner Radius, 2.8 mm Hole Dia, Manufacturers Grade: HF7, ANSI Code: CCGT 21.51F-AL:HF7, ISO Code: CCGT 060204F-AL:HF7, 80 deg Included Angle, 7 deg Relief Angle, Carbide, PCD Coated, Material Grade: H, K, M, N, S, For Use On: Aluminum, Cast Iron, Hardened Steel, Stainless Steel and Titanium/Super Alloys