I recently purchased a very nice bar and wanted to get some rubber-coated or all-rubber change that would not scratch the sleeves. After comparing prices, I decided to go with the Vulcan all-rubber V-Lock change set. The V-Lock set is functional and seems like it will be durable. The only real comment is that I had no idea that the plates themselves would be THAT much larger than standard metal or rubber-coated metal change plates. To give you an idea, the 5 kg plates are almost as large as a standard sized bumper plate. Not a problem or complaint, just an observation, in case smaller-sized change is an important consideration for you. I've trained in a gym that uses the Vulcan bumper plates that have held up really well and I fully expect that I'll get the same kind of reliability out of these rubber change plates. Thx.