Acheté pour le mettre sur filtre magnétique Neewer et fonctionne très bien.Je n'ai pas trop la petite excroissance au centre, inutile, mais sans incidence.

excellent product. strong magnet won't come off in your bag. maybe a little too strong sometimes as it too the CPL off with it if you have them stacked but certainly worth the price. the only challenge is that if your using it the sense hood won't fit properly

You will need to purchase another mount for this to fit on 82mm lens. Will not fit over magnetic 82mm M2 ND filter mount

Update: I reached out to freewell and they offered to send me another one. I'm thankful for their quick response and the offer to send a new one.I needed a replacement quick swap cap for the m2 set. Unfortunately the 82mm cap doesn’t fit the 82mm filter set 🤷