Well, I'm glad a friend of mine warned me about how thin these are. She was very disappointed.
I think if you have your expectations set properly, you'll be okay. I don't think the website talked about thickness (hint: it matters).
This will hold up 1 layer of card paper on a refrigerator if you put the magnet inside the card. It will not hold if placed on the outside of the card (2 layers of paper). If there's a breeze, the card will fall immediately.
Otherwise, it's great for fridge or toolbox decor. They're very flexible/bendable.
I might order these again of the price was right.
Like this? It's easy to order your own custom magnets too 🙂