Due to limited stock, please consider purchasing soon. Thank you for viewing. Direct purchase without comment is OK! Corrosion and vintage processing have been applied. Material: Nickel silver (an alloy based on copper) Size: 12mm Simple packaging in a plastic bag Please be aware of color unevenness and scratches. There may be slight errors in the details due to amateur measurements. 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, such as 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.