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