Oh dear... These are all one-of-a-kind items. I'm also listing these items in multiple places, so if they're purchased elsewhere... naturally, this listing will disappear immediately (ー_ー;) Therefore, if you wish to purchase, please complete the procedure as soon as possible. Thank you very much m(__)m Return of Ultraman Ultraman Jack This is the "Ultra Bracelet." The inner diameter is approximately 56mm (free size). It seems to be a size that can be worn. I don't know the details of the material because I didn't know when I bought it. All I know is that it's "metal." I bought it a while ago and have kept it stored without ever wearing it. Please check the photos for the condition of the item, as they are of the actual product. In addition to this... I'm listing various other items such as "Ultraman Seven series," "Kamen Rider series," "bicycle series," and "?Na?Ze?," so please take a look (^-^)/