This may not be a completely fair review of this product as we use it very differently. We are an OEM manufacturer. We do not use it for robot wheels or any other wheels. We replace the hub with a one inch bronze bushing then use it as rollers on a conveyor return. We are very pleased with these wheels used in this way as we have been doing it now for over 25 years. They do wear out as they run 8 to 24 hours a day 5 to 7 days a week and we sell replacements, but we have never had a customer complain that they don't work or that they wear out to fast. We are also very pleased with the quick delivery and fair price that we got from Robot MarketPlace when we could not get them from our regular supllier.

I bought these wheels as replacements on a special cart we use in our business. I could not find just the wheels in this size and material any where else. They were perfect and it saved our 30 year old cart. The price was great along with ship costs.