Zoom Vibrating Urethral PlugPowered by 1 x AAA battery this is a work of art by some true artisans of Urethral play legend. approximate measurementsOverall length: 109mmInsertable length: 95mmFirst stage width: 7mmSecond stage width: 13mmBulb width: 17mm 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.