Bullwinkle- Steel Mens Chastity DeviceThis piece comes beautifully presented making it an stunning gift!Its length 5.0 x inside diameter of 1.5. ring is 45mm in diameter. 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.