Spring-loaded bull ring. Material: Brass body. Made in Japan during the Showa era. It's quite old, so it may not function perfectly. Please note that this item is sold as-is (NCNR - No Claims, No Returns). The spring is stiff, so it may require some force to open. Being an antique, it may not open smoothly, but as shown in the photos, the opening has been confirmed. Suitable for antiques, bracelets, keychains, bags, etc. How about it? It's also stylish to hang on a wall for interior decoration. #bracelet #keychain #handmade #nose_ring #DIY #antique