HHIP Double sided PM 55 degree diamond negative style rake carbide insert is suitable for mixed production and ideal for external turning of large parts. I.C. is 1/2". L is 39/64". S is 3/16". d is 13/64". r is .0315. Cutting edge with special strength and toughness in an optimal combination with MT-TiCN, thick layer Al2O3TiN coating. It is a suitable grades for a wide number of applications. It is good for finishing, semi-finishing and light roughing of steel, cast steel and stainless steel.