Maximus Vibrating Uretheral Sound Vibrating Steel Short Vibe is an insertable male vibrator or urethral sound for the special stimulation of the male made of premium medical steel. Requires 1 x AAA battery (not included) approximate measurements Overall length: 121mm Insertable length: 40mm Plug width: 8mm 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.