This is a skin film for the FTZ2, the second generation FTZ adapter, which is needed to attach F-mount lenses to Nikon's Z-mount cameras. I currently use the first-generation FTZ, but I accidentally purchased this. This is an auction for the film only, but I've included photos of it applied to my FTZ for reference. It uses 3M's 2080 wrapping film, which is highly stretchable and can be stretched to some extent without heat. It can also be reapplied after being stuck on.