Simple ring, the total diameter is 2 cm, the inner diameter is approximately 1,6 cm, which could be to small for people with big hands. To find it if it fits, wrap a piece of paper around your finger and mark where it overlaps. then measure from the mark to the end of the paper. If this is no more then 5 cm (±2 inches) you should be safe. I make this with names too, on request. Send me a message on the forum if you're interested.