This is a popular adapter that allows you to use Leica M-mount lenses with autofocus on Nikon Z-mount bodies. I was using it with a Nikon Zf. I'm selling it because I don't personally find it very necessary. There are some small, inconspicuous scratches, but I think it's in relatively good condition. If you want to try it out a little cheaper, please do. You can also attach Nikon F-mount lenses or M42 mount lenses to a Leica M-mount conversion adapter and then attach the tzm02 to enable autofocus. Only the adapter body and caps are included. Please feel free to ask if you have any questions.