This is a large size of neodymium circular magnet sample, diameter 100mm (3.94 inches), thickness 5mm, this size for neodymium magnet is already large, suction is also very strong, suction on the iron plate is difficult to get down, surface coating with common nickel copper nickel, can be processed on the surface of 1 or more holes, mainly used in heavy industry, various mechanical equipment, Experiments, etc.
Note: Large and strong neodymium magnets can absorb and attract a large number of metal objects. When using magnets, ensure that there are no objects around that may be attracted to prevent damage to the object or potentially dangerous situations.
Other 100mm diameter neodymium magnets;
100mm diameter round magnet with countersunk hole thick 20mm