This is the K&F CONCEPT NIK-FX PRO mount adapter. It's an adapter for using Nikon F-mount lenses on Fujifilm X-mount cameras. The mount adapter itself has only been used a few times and is in very clean condition. There are no scratches or signs of use whatsoever. While it's not unused, as it has been used a few times, it's in near-new condition. The adapter body is in near-new condition, but the outer plastic case has some minor scuffs on the surface. Please be aware of this if you are concerned about the case. - Model Name: NIK-FX PRO