Got this to replace a faulty wheel on Rubbermaid carts (one of the most common out there).Rubbermaid had a .625" diameter axle. The hub on this is .500". Just would not work. Suggest that this spec be highlighted in the description.I returned this for a refund, but of course the return shipping costs were about the same as what I got refunded. Not blaming Northern Industrial, but the only winner here is UPS. They got everyone's money.