I recently purchased the Power Balls. I like them but, it bothers me that there isnt a ring or something on the end to keep them from being pulled in. Is there another set of anal beads that someone recommends. I dont want a long strand like the x-10 or anything. And I want something that i can wear around the house which is why I'm a little upset that there isnt a ring or stopper on the end of these beads.