I need to remove what I *thought* were called 'spire' clips but on searching for "spire clip" what I get to see is clip on fasteners for use with self-tapping (or similar) screws.
What I am talking about are round clips which push on to a rod or collar and are basically impossible or very difficult to remove without destroying them.
So, questions:-
What are they actually called?
How to get them off (destructively or otherwise)?
Where can I get replacements?