... -60-600mmSpur5-8machine, auto,tractor, machine for agriculture,hydraulic pump,engine, transmissionNote: 1.The material can be brass, brozen, 16MnCr5, 40Cr ... , 45#, 42CrMo, 20CrMnTi etc.or according to the customer's requirements 2.Heat treatment: Nitriding, Carburization and ...