Generally accepted best practice is to replace the quick link when you replace the chain. If the chain is to be removed and reinstalled, for cleaning for example, then the same quick link is reused with the chain. The link goes in the recycle bin when the chain is retired.

I'm not saying that anyone should do this, only that this is what most people do, including myself.

Personally, I've never purchased the reusable version.


-Tim-