Ben Wa balls, also known as Burmese bells, Orgasm balls, or Geisha balls are small plastic balls attached to eachother with a string containing smaller metal balls inside that roll around. These are known as Agitating Steel Love Balls. They contain a smaller metal ball inside each case that rolls around inside—used for sexual stimulation – either for insertion into the vagina or anus. Once inserted into the vagina or anus, the smaller metal balls thrust the movement of the large balls back and forth with every movement of the body. The muscles inside the vagina or anus instinctively contract to hold the balls in place, thereby strengthening and stimualting these muscles. This toys creates a unique and highly enjoyable movement with every movement that your body makes.