Since these are used, the remaining ring sizes are 5, 7, 9, 13, 15, and 17 (in Japanese sizes), for a total of 6 rings. If the size fits you, why not? The marks and dents made when the rings were created together, filled with the feelings of two people, and the small scratches that occur in daily life, all become part of the design. A unique "pair ring" is born, with no two rings exactly alike. Ring making that reflects differences in personality. Even if the shape is irregular, is that also part of the charm...? Based on the concept of couples making rings for each other, these rings have also been selected for the GOOD DESIGN award. Brass has the property of tarnishing and blackening by reacting with components in the air, so it is a simple and tasteful metal where you can enjoy the scratches that develop with use, and the color changes that turn into an antique gold. If you want to remove the blackening or make it shiny, you can easily restore it with commercially available polishing agents or polishing cloths. Please refrain from purchasing if you are looking for perfection, as these are used items.