Well, you get what you pay for. It seems like most people forget about that. I took a chance on these because I don't think spending the big bucks for a B+W filter is worth it. And boy was I wrong. I got these in the mail from amazon and put it on my Nikkor 24-70mm lens. It was a bit hard screwing it on and i was struggling to take it off and eventually I got it off and the inner metal ring snapped. Back to amazon it went and I got myself a B+W right away. Stay away from these, save up and get a B+W.