Lady Girl Vibrating Uretheral Sound with BallInsertable urethral wand with sex ball attached made from medical steel. approximate measurements Small: Overall length: 115mm Insertable length: 40mm Plug width: 8mm Ball width: 10mmLarge: Overall length: 160mmInsertable length: 155mmPlug width: 8mmBall width: 10mm 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.