Thank you for viewing! Direct purchase without comment is OK! Material: Solid brass Size: Approximately 11.7~12mm Simple packaging in a plastic bag Please be aware of color unevenness, scratches, etc. Due to amateur measurements, there may be detailed errors. The color of the actual product may differ from the photos depending on the shooting environment. Delivery will be via Yu-packet Post mini. Simple packaging. I also have many other items for sale, including brass carabiners, wallet chains, vintage stainless steel, and brass keychains. Due to the nature of the product, there may be scratches and stains. Please check the images before purchasing and we appreciate your understanding. Thank you for viewing.