4.10/3.50-4 rubber wheels for wheelbarrow,hand truck,tools cart etc. different size & pattern. competitive price. can do OEM. 4.10/3.50-4 wheel barrow wheel,rubber wheels.pneumatic wheels.2pr and 4prmetal rim with ball bearingvalve TR87 or TR4.supply rubber pneumatic wheels,solid wheels,PU foam wheels.different sizes and patterns.contact us for more details!