These are really too small for nipple rings. They work better as earrings. Also, it is a pain to put the segment into the larger piece--you will need someone else to do this for you, unless you have smaller and more agile fingers than I do.

On the other hand, the connection lines disappear and there are no beads, wires, etc., and it is a good quality stainless: It looks great when it is in. And, since there is nothing but the smooth ring, you can leave it in essentially permanently.