Great for a paracord lanyard, or combining with the mini Ti split rings to add or remove your items from a larger key ring. I bought the carbon fiber rings as well, and will stack them as a fashion ring (Ti, CF, Ti) they are about a "size 13" if you're wondering.

I wear a keycard ID badge on a retractable wire lanyard around my neck with a couple of metal keys and a small flashlight. I've never been totally satisfied with how the split rings with the keys and light connected to the lanyard itself: I wanted something light that would sit flat against the back of the badge (yes, I could have just used another split ring, but that's why I shop at CountyComm). One of these titanium rings serves perfectly.

I received the three titanium rings. They are round and I know this because the radius is half the diameter. I’m still working out a practical use but no regrets picking them up from Countycomm