Unused item. This is a mount adapter for using Nikon F-mount lenses with the Fujifilm GFX series. After confirming its operation, I haven't had the opportunity to use it and have been storing it in a dehumidified storage box. Although this product's prices have significantly increased at both official distributors and parallel importers, I am offering it at a discounted price. Please refer to the photos for further details. Please note that shipping may take longer than usual during the year-end and New Year holidays, but I will do my best. Thank you for your understanding.