This is really nicely made, heavy and feels like a quality piece. I have a few bits and pieces from K&F and they've always seemed to deliver to be honest. This fits onto my iPhone 16 Pro and magnets on strong, and I don't even need to take off my case. I thought that might kill this a little bit actually, if I had to remove my case and faff about, but nope, this just stuck right on there, no worries at all. It did seem to be a pretty easy fit too, so I would guess this fits on most every case universally. The mount has a really soft, plush feeling sponge pad to protect the phone, if you were to stick it on without a case, and the whole thing just feels nicely made and well thought out. The filter itself is beautiful, with really nice glass. It works very well, and the ring rotates in a smooth, weighted way, which feels good to use, and definitely adds to the overall feel. It comes in a nice little hard carry case that has plenty of room for this and any other filters you might have, and a microfiber cloth for cleaning. Overall I'm really happy with it, it's exactly what I want from a filter and the actual housing system is really nicely made. Good stuff.