... .longer service life 3.high load capacity 4.light weight,acid and base resistant Pu foamed wheel 12x3.50- ... mm7,Hub length = 70 mm8,Hole dia = 20 mm9,PU weight= 1.10 kg10,Total Weight =1.45 kg11,Load ... promise to supply you with high quality solid wheels,and aslo OEM service for different colors PU Foam Wheel for any sizeIf ... 13'',14'',15'',16'',18'',20'',24'',26'' pu foam wheels 12x3.50-5 for hand truck