Thank you for viewing. This is a Goros fine angle chain. It is a genuine product that I purchased myself at Goros around 2012 or 2013. After that, it was a little long, so I cut the length of the chain myself. Therefore, I am selling it as a "defective item" because I thought there might be a need for the chain only. Chain length Approximately 44.2cm including the marukan (connecting rings) at both ends. Regarding Goros, there are no guarantee cards or certificates, so if you have any concerns, please refrain from purchasing to avoid trouble for both parties, and please purchase it yourself at Goros. Also, I cannot answer any further questions regarding authenticity or the purchase process, so please understand. Regarding the "safe appraisal" service, I have not set it up, considering that the length has been cut and may not meet the criteria. Thank you for your understanding. *I have used it myself, so there are inevitably small scratches from use and reassembly, so please purchase it if you understand that it is a used item. Returns after purchase are not accepted.