Lightweight large gauge hollow ball closure ring manufactured in 316L Stainless Steel with a mirror finish. The ends of the ring are open and the ring is hollow all throughout. Black Nitrile ball pushes into gap to complete closure. These go through several machining process which then end with polishing to a mirror finish and a thorough quality check. We believe our items have the best quality on the market. Gauge/thickness: 6mm Internal diameter: 12mm Ball Diameter: 9.5mm (3/8") Weight by sample: 7 grams (0.25 ounces) Care should be taken when purchasing our items due to the nature of the products and the intimacy. We offer many different sizes with a lot of our products, so please take care when choosing to ensure it's the right size (feel free to drop us a message if you're unsure of anything). Please note: there may be a handling charge or custom fees on the parcel depending on country of destination. Returns Our items are packed in a quick seal transparent bag for protection and presentation. Care should be taken when ordering to ensure correct product and product size is specified. Due to hygiene reasons and the intimate nature of our products, returns/refunds can only be given if there is a manufacturing defect or the seal remains intact.