Super Strong Neodymium Disc Magnets with Double-Sided Adhesive, Powerful Permanent Rare Earth Magnets. Fridge, DIY, Building, Scientific, Craft, and Office Magnets, 1.26 inch D x 1/8 inch H - 6 Packs

glue these magnets under metal cups. The cups can then stay secured to a metal shelf in a van when driving. For extra resistance, i sandwich two magnet with the shelf in the center.

You don't realize how strong these magnets are until you actually take them out! Great for tinkering projects.

Magnets work really good. Well constructed. Impressed by the holding strength. Holding the chandelier in my son's car.

Initial thoughts. The size is exactly 32mm wide but only 2.8 mm high, not the full 3. With the adhesive sticker the size goes up to 4 mm. Also, the finish is not as polished as what is seen in the picture. The sticker pad also has a larger font than what is pictured. More or less it seems like the correct product though.I bought these to use with my Prusa mk2 3d printer. Temperatures will go up to 100c easily. I chose these because they are neodymium and should handle temperatures up to 220c. So far 6 keeps the print from shifting, 4 was not enough. I will update after some time as for how well these hold up to heat and their strength over time.Just a word of caution too. Don't take them all out of the package at the same time and place them on the desk side-by-side. They will find each other!

Very strong , multiple uses , good price

I ordered this because of what they said was a strong magnet, it’s not only adequate wouldn’t order again

I have purchased a few 2-way magnets but this one is by far the strongest. There are a few things in my kitchen that I reach for several times a day and affixed this magnet near the sink for easy access to them. The adhesive is also very strong and when I pull something off the magnet, it doesn't feel like the adhesive will detach from the wall. So strong magnet and strong adhesive makes this a perfect solution for my needs. I also have one on my fridge which doesn't use adhesive and it works just as well.

Surprisingly weak concerning the statements in the product description. I used them to hold a canvas generator rain cover down on a steel toolbox and I'm down to one magnet and having to tie the cover down because 3 of the 4 magnets have now flown off and gotten lost from the cover flapping in the wind which was the whole reason I got them.This is pretty much what I expected from the fact that the product listing boasts about using weaker N45 material instead of N52 material and claims it's for material strength reasons rather than cheapness and knowing most customers aren't going to be well informed enough to realize that, but I was hoping they would still live up to the magnetic field strength claims. Oh well.