Magnet Square - 0.25"

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.

Magnet Square - 0.25" Product Help and Resources

Magnetic Levitation

November 20, 2019

This tutorial will show you how to build a magnetic levitation circuit using common parts.


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Is the "hold small children" part true!

    • Datalink / about 14 years ago / 1

      Well, enough of them definitely could... though the weight rating isn't listed on the page, so we won't know until it is.

    • jeffmcc / about 14 years ago / 1


  • mkruse / about 12 years ago / 5

    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?

  • t00thPIK / about 9 years ago / 1

    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

  • Member #590127 / about 10 years ago / 1

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

    Thank You!

  • Member #30702 / about 13 years ago / 1

    Very strong magnets. Fun to play with.

  • baum / about 13 years ago / 1

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

    • jma89 / about 13 years ago / 2

      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.]

      • baum / about 13 years ago / 1

        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.

    • Member #101672 / about 13 years ago / 1

      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

Based on 2 ratings:

Currently viewing all customer reviews.

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.

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.