rubber wheel 14x350-8 we supply the kinds of rubber wheel 10x350-4 ,10x300-4 ,,14x350-8 16x400-8 ,,etc producing many kinds of rubber tyre, 2pr and 4pr producing the inner tubes ,natural rubber material ,Valve is TR13 and TR87 Producing the rims , plastic kind and steel kind Different colour avilable ,,spray plastic and zinc Hub is offset or centered bearing:ball bearing ,roller bearing or nylon bushing/steel bushing For the 350-4 tyres tread pattern ,we also can change the followings: