... length, bearing diameter etc.Commonly: a wheel includes: tyre+tube+rim+bearing=wheel Tires: different tire layer: 2pr/4pr/6prTubes:natural or butyl ... on schedule but also arrange special products for small orders with multiple models. OEM is available.Supply Capacity: 20,000 pcs ... :500 pcsShipment Port: Qingdao Port, ChinaMain Size: 5x1.3,6x1.4,6x1.5,6x2,7x1.5,7x2,8x1.75,8x2,8x2 ...