I wear just a regular width metal ring around the shaft only. I have a couple of different sizes, according to the fit I want, but they are about 2 inches inside diameter. I'm not sure I'd want a wide ring like that, it would seem to be in the way when fucking. After a very bad and frightening experience, I will never put a metal ring behind the balls again, only rubber or plastic there. But around the shaft alone, I like the feel of the metal ring, and am confident I can always get it off, although sometimes it takes some effort.