... advantages:1. polyurethane tires Widely used on wheelbarrow, Lawnmower ,hand truck, and trolley2. abrasion resistance, corrosion resistance and higher flow ... supply you with high quality solid wheels,and aslo OEM service for different colors PU Foam Wheel for any sizeIf you are interested ... for sale: 6'',8'',8.7",10'',12'',13'',14'',15'',16'',18'',20'',24'',26'' pu foam wheels 12x3.50-5 for hand truck ...