K18GP Curb Chain Ring - Approximately Size 21, Gold This is a gold chain ring with a curb chain design. The width is approximately 6mm. Made of stainless steel with 18KGP, it won't rust from water or sweat, making it easy to care for. It's a simple design that you'll want to have at least one of. Size: Approximately size 21 Measurements are shown in the photos. The box is not included. It will be shipped in a jewelry pouch. Although it's a beautiful item, there may be minor scratches that occur during the manufacturing process. Please understand this before purchasing! You can purchase without leaving a comment. Returns are not accepted for reasons such as incorrect size, so please confirm the size before purchasing. It will be shipped via Yu-Packet Post Mini.