Neodymium ring magnets (also known as canister magnets) are big, horizontal disc magnets with a tiny hole at the middle. They were devised by a silversmith in Toledo, OH. Neodymium magnets are rather common, but they do not have the widespread appeal that any magnetic materials do. However, it’s not because they’re ugly or badly made. It’s because there are a lot more other kinds of magnets available that are much better quality and much cheaper.
The largest difficulty with neodymium ring magnets is they tend to lose their shape a bit too fast, which causes them to shed their usefulness for many decades. If some of these get tangled up in a vehicle, for instance, and it’s in transit, then the magnets will probably likely to begin hurting. They continue to be fairly robust, though, which means you probably will not have too much trouble simply pulling them apart. However, the point is that the cost of replacing a worn out or misaligned magnet is a lot greater than the price of a good quality ndfeb ring magnet.
Fortunately, there are strategies to get a great deal on these magnetic devices. There are magnetic craft stores, like Hobby Lobby or Pier 1 Imports, that sell quite affordable neodymium ring magnets and other similar products. But you can also purchase them off of eBay, Amazon, Craigslist or straight from the manufacturer.