Ring Binder

What are the ring halves on a 3 ring binder and how do I fix a loose ring binder with it?
I’m trying to fix a loose 3 ring binder. One of the rings are really loose that it wiggles when it closes.
I searched online and found a website that tells me how to fix a 3 ring binder, but what stumps me is what the ring halves are.
What are the ring halves on a 3 ring binder?
I searched online for ring halves, but it did not help. Any help is appreciated.
the ring half (halves) IS the ring. Literally just half of your ring, when it’s open the rings are split into halves. The site is referring to one of the halves…when both halves are together it makes up your complete ring. Your binder has 6 ring halves…when shut then you have 3 whole rings. Make sense?
Mini Album Series – Episode 2 – 3-ring Binder Mini