I have a tire machine and wanted to order a set of these from the manufacturer of the tire machine. They look exactly like these but cost just under $400. I took a chance on these and I'm glad I did. They're very solid built and they have protection and coating on all the surfaces that come in contact with the rim. I've done several tires for motorcycles using these and never a problem, including really wide 200 series rear tires. They work like a champ.