KORLOY Indexable Turning/Boring Insert, TPG/TPGN Insert, 322 Insert, Triangle, Carbide, Manufacturer's Grade: ST20, 3/8 in Maximum Depth of Cut, 1/8 in Thickness, 0.031 in Corner Radius, ANSI Code: TPG322 ST20, ISO Code: TPGN160308 ST20, 60 deg Included Angle, 11 deg Relief Angle, Uncoated