I recently purchased a Fujifilm X-T1 and I have tons of Nikon lenses, so I added this to my cart. So far, so good. All of my G and D lenses work great. This adapter comes with an aperture ring in case I need it. I normally shoot wide open but the adapter gives me 4 options. Max open and closed and 2 in between. Not sure about what it really does and don't really care. It gets close enough for me.
It was fairly cheap, works just as it should, so I have no complaints. Not much to say about it except if you're in the market and don't have or want to spend over $200 for a Metabones, go for it!