What exactly qualifies as a large - specification magnet? Different people have different understandings. It all depends on your specific specifications and performance requirements. For example, a magnet with an outer diameter of over 100 can be considered a large magnet. The higher the performance, the more expensive it is, especially for customized specifications. The editor at Shanghai Openmagnetic previously encountered a customer who used large - specification neodymium magnets with high performance requirements. Therefore, large - specification neodymium - iron - boron magnets are quite expensive. While they have an extremely strong magnetic force, they are also very dangerous. As a result, there are relatively fewer manufacturers producing such large - specification magnets.