AVERZELLA M3 Magnetic Screw Set, Suitable for Fixing 25mm Thickness Cooling Fan on The Surface of Various Electronic Products (10 Pack)

I've bought these over and over and over. They are great, strong magnets that won't get shaken off.Makes mounting fans so much easier as long as you have a steel case. Put fans exactly where you need them.You can use these with a magnesium or aluminium case as well with some steel washers and a dab of super glue, or you can find magnetic pads with adhesive on them... this might sound like a lot but is better than drilling holes IMO.

Magnetic is strong, can any place install fan. I'm very happy

Hooked up 2 120mm fans on my computer case on the top side (whoever designed it *coughTHERMALTAKEcough* made it to where you can access the screws up top to screw in any kind of fans) So i grabbed these and just used the bar its suppose to "clip" to and the magnets are strong enough for them to be running full blast and not fall off!!!might grab me a few more so i have some as backup's for when im out doing computer work

The magnets are very weak. They will hold a fan, just don't bump them. All 4 magnets are essential to get a good hold on the metal.

Extremely useful for affixing newer fans in older or different cases. If they made an “L” version that turned 90 degrees so you could affix fans horizontally, wow that would be swell. In the meantime, Velcro also serves a similar function