The Frisky Head Ring & BallJust like a Ring from tiffany's you will love the way that this head ring looks and feels. Feel more during intercourse and when having an orgasm with this Steel Ball Head Ring! Simply place ring around your penis head, will fit nice and tight, and the ring along with the strategically placed ball will add pressure making for more intense orgasms. This ring can be used with or without a partner if desired. Ring is made of stainless steel. Approximate MeasurementsBall Size: 10mm Thickness: 3mmRing Sizes: 25mm, 30mm, 32mm, 33mm, 35mm and 38mm This product is certified 100% Non-Magnate and medical-grade steel. Beware of cheaper products that are not solid surgical steel but chromed steel or poor quality surgical steel that contains Magnate. Magnate is the ingredient that makes steel rust. We will only include this endorsement on our 100% surgical steel products.