1.Solid rubber wheel with metal hub, 2.model : 802RIB 3.Size: 200X50mm 4.bore diameter: 17mm 5 tyre thread: rib thread 1.Solid rubber wheel with metal hub ,2.Material:rubber tyre,iron wheel hub3.hub type: center / offset4.hub: steel5.Size:200*50mm tyre , Bore diameter /wheel base = 17*33mmWeight:0.98kg 6.Customized sizes, colors, and materials are available upon your requests