This is NOT your standard fridge magnet, perfect for holding up quite a bit of weight. Composed of a rare earth magnet Neodymium/Iron/Boron (NdFeB). Magnetization is throughout the thickness of the magnet. Perfect for projects concerning electromagnetic devices make for a great way to attach tools to a metal workbench, and as a trigger for reed switches. Dimensions are measured at 0.25 inches and a pull force strong enough for its size.
Don't let the photo fool you - these are very small magnets.
Sold in single units.