This is a frequently asked question in the store.... and to answer, a small explanation and an image will be perfect to understand

In some items in the store that have connection rings in their composition; The option "Closed rings with solder" appears. What does this mean?

Well, it's very simple; In the image above, it is clearly seen.... On the right of the image the ring joint is closed with solder; So it is not removable and depending on your idea, you should take this into account... although the problem is easily solved... (a cut with cutting pliers and that's it).