K&F CONCEPT NIK(G) - FX Mount Adapter Both the adapter side and the mount side are made of metal. It seems that the aperture can also be adjusted with this adapter. I bought it because I wanted to use it, but I don't seem to have the opportunity to buy a FUJIFILM mirrorless camera, so I'm letting it go. For those who want to use it, please. The build and texture are very good, made of metal. There is no box. I will wrap it in bubble wrap and send it. - Brand: K&F CONCEPT - Model: NIK(G) - FX - Type: Mount Adapter Thank you for looking.