This Clear CZ Flat Disk Captive Ring is a stylish piece of body jewelry. Made from durable 316L stainless steel, it's available in sizes 16G-2G with five different inner diameter sizes (5/16"/8mm, 3/8"/10mm, 1/2"/12mm, 9/16"/14mm). Featuring a crystal clear CZ gem, size varies depending on the gauge (4mm-8mm). Ring openers are recommended for 8G and larger sizes.