Steel Jewelled Slave Collar LargeYou will be the belle of the dungeon wearing a jewelled slave collar made from the highest grade surgical steel. Your master shows you how much he cares by allowing you to wear this awesome bondage jewel that will have you on your knees in appreciation. Get ready to create hellfire with this awesome piece. MeasurementsDiameter: 136mmDepth: 28mmThick: 6mmO-Ring: 20mm Gems: Rose Aqua Ruby Green 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.