※ Before purchasing, please refrain from commenting things like "Can I buy this at ○○cm?" Please purchase without commenting if it's a single item. We often miss comments, and many people don't buy after commenting, so please understand. However, please be sure to inform us of the length after your purchase. This is a chain necklace made of surgical stainless steel. It's a classic ball chain. The ball necklace chain, made of many connected beads, is a standard chain that suits any pendant top, regardless of whether it's for men or women. The clasp of this chain is a tubular connector type, also familiar from dog tags, making it simple, durable, and less prone to breakage. It's easy to thread through pendants, and you can adjust the length by cutting it with nippers, making it very user-friendly. It's medical-grade stainless steel, gentle on the body, minimizing allergic reactions. It's a recommended material for those who can't use silver accessories due to metal allergies. Since it's a metal that doesn't easily discolor, it doesn't require polishing or other maintenance, making it very easy to enjoy. ※ In rare cases, it may not suit your skin. If this happens, please stop using it immediately. This product allows you to freely choose the length up to 90cm. We accept orders in 1cm increments, so please specify your desired length when you purchase. ※ However, please note that there may be slight variations. Please note that we do not accept width specifications, as the width is only as stated. Thank you for your understanding. ■ Chain width and thickness: Approximately 3.5mm wide x 3.5mm thick ■ Material (including clasp): Medical-grade surgical stainless steel, resistant to metal allergies