※ Please do not comment before purchasing, such as "Can I buy this at ○○cm?" If you are buying a single item, please purchase without commenting. We ask that you do so because we may miss comments, or people may only comment and not purchase. However, please be sure to let us know 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, which is made up of many beads, is a standard chain that can be matched with any pendant top, regardless of whether it's for men or women. The clasp of this chain is a tubular connector type, which is also familiar from dog tags, so it is simple, durable, and hard to break, easy to thread through pendants, and easy to adjust the length by cutting it with nippers, etc. It is very convenient to use. It is a medical-grade stainless steel that minimizes allergic reactions and is gentle on the body. This material is recommended for those who cannot use silver accessories due to metal allergies. Since it is a metal that is unlikely to discolor, it does not require maintenance such as polishing, and you can enjoy it very easily. ※ In rare cases, it may not suit your skin, so please stop using it immediately if this happens. This product allows you to freely choose the length up to 90cm. We accept orders in 1cm increments, so please let us know when you win the auction. ※ However, please note that there may be slight errors. Please note that some people specify the width, but the width is only as stated and cannot be specified. Please understand this in advance. ■ Width and thickness of the chain: Approximately 4.0mm wide x 4.0mm thick ■ Material (including clasp): Medical-grade surgical stainless steel, which is resistant to metal allergies