TRYMAG Small Magnets 8x2mm, 80Pcs Small Round Rare Earth Magnets, Tiny Strong Neodymium Disc Magnets for Whiteboard, Fridge, Office, Hobbies, Crafts and Dry Erase Board

Perfect for 3D printing projects. I needed small, powerful magnets, and these fit the bill exactly. They install easily into prints and hold securely to metal surfaces. Despite the small size, they have excellent holding strength. Great value for the price—highly recommended!

I bought this hoping it would be better than the generic cheap ones but it's not different at all. Regardless, a good product and great value.

This particular magnets are very weak if compared to other 8x2mm, ruined whole project, waste of money. Design were for strong 8x2mm magnets and this magnets dont hold where other 8x2 does the job

It definitely is not 2mm thick, makes it useless now.

They're about as strong as hard drive magnets if you've taken one apart. There's plenty of size choices and I'm seeing a lot of people complaining they're too small, too weak, etc. The measurements are in millimeters. 1mm is very very thin, 1mm is about as wide as a small paper clip. Not the whole clip, as wide as the wire itself. The first option that's selected by default is 3 x1mm. That's 3mm wide, 1mm thick, about the size of the little button tip of an AA battery if you chopped it off. Knowing that, they're good magnets, the bigger they are, the more magnetic force they have. Also, if you do buy very thin ones, don't pry them apart if you want one magnet from the stack. You need to push it off so they don't snap on you. They're nickel plated so they look like a tough metal but neodymium is very brittle.