fastener for wheel hub by forging 1,material:42CrMo 2,surface:natural color 3,OEM is welcome 4,certificate: ISO9001:2008 fastener for wheel hub by forging1,material:42CrMo2,surface:natural color3,OEM is welcome4,certificate: ISO9001:20085,Process: forged——Machining by CNC——heat treatment——chrome plating