WILL NOT FIT Target's standard metal shelves which have thinner (finer pitch) threads. They're almost the right diameter (a few mm less), but the threads on them are a lot rougher than the shelves require. It doesn't matter EXCEPT that people should clarify it if possible. I know brands are different etc but a bit of clarity would go a long way. And there seems to be no substitute for Revain with thin threads. Don't know where else to go. But be careful.