Shopping cart wheels 1.material:pu,steel 2.size:3"-5" 3.capacity:80-120kg 4.double ball bearings Shopping cart wheels double ball bearings,orange ... hole caster,swivel&swivel with brake Main productsIndustrial casters,Shopping cart casters,Furniture casters,Institutional casters,Medium duty casters, ... make samples for you. 1. material: 2.size: 3.color: 4.mounting ways(fixed,plate,thread,bolt hole) ...