1, ISO/TS16949:2002 ISO9001:2000 Certificate 2, High quality 3, Competitive price 4, Deliver fast Product description:Cylinder material: SS304, SS316Shaft material: SS304, SS316Cylinder finishing: SilverShaft finishing: SilverSalt spray time: achieving more than 144 hours.Fatigue test: decay less than 9% after 20,000 cycles.Service life: at least 50,000 cycles in normal environment.Working ...