... have many years of production experience of rubber wheel 2.best quality rubber wheel pr3010 3.dimension:6.50-8 best quality ... in the production of 5 series and 100 styles of wheel barrow, Plat-Form cart, hand trolleys, tool carts & garden carts ... castors. Our annual production capacity reaches 2 billion pieces of wheel barrows & 4 billion pieces of all kinds of castors.We ...