20 X 5mm Magnet Ring (Hole 5mm) [Neodymiun]
|No. de artículos en existencia:||38|
These are very small rare earth magnets. 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.