... noise, long-life 4.excellent reliability. 5.nunning smoothly Model NO. : R608RSbearing rollerBearing material:carbon,chrome,stailess steelRoller material ... fiber,etc Type: 2RS ZZ ,Z ,RS,OPENOEM and non-standard bearing&roller orders are available .Sealing from: With one ... metal wheels, sports equipment, furniture,machinery and equipment, toys, model aircraft and so on. Welcome to visit our factory and ...