Set of 5 Brass Double Rings, 10mm Diameter, Key Holder These are brass double rings (double rings) with a diameter of approximately 10mm. Sold as a set of 5. The material is solid brass, and the more you use it, the more it will turn into a cool gold color, giving it a unique taste. Please enjoy the aging process. Use them to connect keys, carabiner key rings, wallet chains, and key holders, or for customization. Shipped in simple packaging. A box is not included. Due to the characteristics of brass, there may be scratches, blackening, and dullness, so please understand this before purchasing. We have photographed the actual product, but the color may vary depending on your monitor or screen brightness. Shipped via regular mail mini-letter. Please understand that tracking and compensation are not included. If you prefer anonymous shipping with a tracking number and compensation, you can change to Rakuraku Mercari Mail (Nekopos) for an additional 120 yen. Please comment if you wish to do so.