Seco, 03096574, Turning, Insert, Series: TNMG, TNMG Insert, Triangle Shape, 12.7 mm Inscribed Circle, 4.76 mm Thickness, 20 mm Length, Negative Rake, MF3 Chipbreaker, 0.8 mm Corner Radius, 5.15 mm Diameter Hole, Manufacturer's Grade: TP3501, 60 deg Included Angle, Neutral Cutting Direction, Carbide, TiCN/Al2O3