I bought two of these since the original one I had cracked and milk was accumulating inside it and it was impossible to clean. The problem is that the magnets inside it loosened and pushed the plastic cap covering them. I figured the replacement would do the same eventually so I bought two. At first they were impossible to click into place. But after a few attempts, and some strength, it worked. Now they are functional but the quality of those is quite disappointing. Nothing to do with Eight Once though, I received my order very quickly, and I’m very happy with the rest of it.