Trolley Cart Wheels Products DescriptionDC Casters Trolley Cart Wheels are widely use in four wheels trolley,Website:http://www.dc-casters.com, Foldable Trolley, Storage ... Box, Plastic Foldable Cart, Heavy Duty Trolley, Steel Foldable Trolley and etc.Wheel Diameters (Inch):6’’,8’’,10’’,12 ...