http://getgreatbuys.com/product/316l-stainless-steel-chastity/ password: look This one comes with a hypnosis file designed to increase your need to wear it. It worked on me like a charm. I know first hand.
It weighs 12 ounces , and I found a few sharp edges that were removed easily with 180 grit sand paper. The lock also caused some slight problem with sticking, and a small round micro file fixed the problem. I plan to try to make mine lighter in weight, just have not had the time yet.