... acid and base resistant Pu foamed wheel 12x3.50-5"Detailed technical information:1,Tire Material = Solid Polyurethane2,Rim Type = ... quality solid wheels,and aslo OEM service for different colors PU Foam Wheel for any sizeIf you are interested in ... are sincerely looking forward to be your supplier.Size for sale: 6'',8'',8.7",10'',12'',13'',14 ... '',20'',24'',26'' pu foam wheels 12x3.50-5 for hand truck