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Creative Commons images are CC BY-NC-SA 3.0

Description: These are small rare earth magnets - 0.25" cubed. Composed of Neodymium/Iron/Boron (NdFeB), these magnets are curiously strong and make for a great way to attach tools to a metal workbench, hold small children to a fridge, and as a trigger for reed switches.

Activates the reed switch (shown below) at a distance of about 3cm.

Sold in single units.

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Customer Comments

  • Is the “hold small children” part true!

  • Has anyone ever been in one of those moods? The kind that make you feel the need to point out that this is a cube, not a square?

  • This might be a silly question, but I am a noob: Will this work well in a Hall Effect set up for a joystick? Or would a bigger/smaller/different shaped one be better? Cheers

  • Hello, I’m from Philippines. Please have a re-stock of this product. We need 10pcs of this for our thesis.

    Thank You!

  • Very strong magnets. Fun to play with.

  • Are these conductive? Can I solder a wire on to one?

    • If you are going for an easy way to connect boards together you might wanna look at the magnet ring listed below.
      [Just came from there and they mentioned that very use in the description.]

      • No… not that. I’m trying to hack some devies with magnetic expansion ports on them, but I just realized I can solder directly on to the ports.

    • They are typically nickel plated, so yes, they are conductive, although I imagine it would be hard to solder to.

Customer Reviews

4.5 out of 5

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1 of 1 found this helpful:

Absolutely fantastic

Cube magnets are awesome. They are unbelievably strong, and they are relatively cheap. So far I think I’ve bought 10 for 2 refrigerators.


1 of 1 found this helpful:

Powerful little cubes

The magnet is small, though bigger than I expected for some reason, and really really strong. So it’s exactly as advertised, and just what my project called for.