PU foam tyre 1.Modle:2.50-4 2.Rim:steel/plastic 3.Bearing:16,20,15,19 4.Lightweight wheel Product ... your adviceDelivery Detailwithin 30 days SpecificationsPU foam tyre 1.Modle:2.50-4 2.Rim:steel/plastic 3.Bearing:16,20, ... 1.Model/typle: PU foam tyre, pneumatic wheel, solid wheel etc.2.Size : PU foam tyre(6x2,2.50-4,3.00-4,3.50-6 ... ,3.50-4,3.50-5,4.00-6, ...