Reply from Sport-Thieme team:
We are sorry to hear that the quality of the chrome weights is not satisfactory at all. The rubber ring is not glued, but it should always be firmly in place. Is this not the case with the rings from your weights? Of course, there should be no rust. We will contact you directly in order to make a proposal for a compensation. Maybe you could even provide some pictures, so that we can pass this on to the manufacturer. Your help is much appreciated, as it helps a lot to steadily improve our products.