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