I found the spring to be a little weaker than I would have liked for keeping important items on my keychain. I imagine they could be great for many other purposes e.g. for crafts (or less important keyrings that aren't carried around often). I decided not to use them for now and bought another version elsewhere. Maybe I'll find a use for it later. Update: I am deducting two stars because the seller contacted me TWICE asking me to upgrade my rating - WHAT I DID. ONCE. To be honest I think it's very bad form to ask for a rating upgrade if it's HONEST. They offered me a 20% refund for this, I declined. If you look at my other reviews, almost everything I give is 4-5 stars, so I'm not criticizing in any way. In my opinion they are just too cheap to use on a keychain. A seller should NEVER try to BUY the best rating from their customers.
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