... ,acid and base resistant Specification:1 Pu wheel 10*300-4/pu foam tyre.2 Flat free tyre ... or as your demand.Product feature (1)10"pu wheel with black steel rim.· (2)Color and ... to be afraid of being punctured. SURFACE COLOR PU WEIGHT RIM LOADBEARING DIAMONDblack 1200g PlASTIC 100kg ROLLER ... 20 years' experience.Our main products are PU foam wheels, PU filler wheels,flat free wheels Our factory covers ...