MOSUO 9 Pack Metal Plates, Mount Metal Plate Kits with 3M Adhesive on the back for All Magnetic Car Phone Holder Car Mount Cradle and other Magnetic Holder, 9 Round, Black

Very good. With one of these discs, my car air vent holder securely supports my Samsung Galaxy S25 Ultra which is quite heavy in its case so can definitely recommend these. Tested going over speed bumps and uneven roads and the phone didn't budge!

3M sticky adhesive, good quality magnets. I have attached it to my Spigen Rugged Armor Case. There is no hole in the magnet like some brands, it also sticks very well to magnet in my car

I sticked it to the back of phone directly and it has good adhesion. Didn't test it on a case. Some scratches over a couple of months but not too bad. The thickness is okay, not to be felt when I got used to it.

These are excellent. Credit where it's due. These come with a thin adhesive film which you can apply to a surface you don't want damaged (such as the back of your phone) and then you stick the metal plate on top of that with its already applied 3m tape. I wasn't sure how this would work and couldn't understand how the metal plate would adhere better to the phone than the film underneath, but it's solid, unobtrusive and holds well to the dashboard magnet. I've had other plates like this that don't stick well at all.

I've had to glue the plates on as they kept falling off the item I stuck them on. BUT they do stick on phones no problem. And I like the size. . I would still buy these plates again for their size

Brilliant magnetic holders , second purchase

They are thin but very sturdy, They attracts to a magnet very well. Surface is shiny silver metal, not blue as many reviews says. Protective film is light blue as you can see on photos. They come with 3M adhesive which has very strong adhesion but the thing is that when you stick it you need to leave it for about 24h before usage

Great product at a very good price. Delivered quickly. They are easy to fit. And if you make a mistake they come with extra sticky pads. Yes very pleased