NdFeB Pot Magnets are best for small sized magnetic products with maximum pull strength (ideally when in direct contact with ferromagnetic e.g. mild steel surfaces).
Neodymium(NdFeB) magnets are the strongest type of rare earth magnet commercially available and are manufactured in a wide range of shapes, sizes and grades.
Countersunk pot magnet can be used with screws. The pulling force can be customized according to needs, and the pulling force can be increased or decreased without changing the appearance size.
Halbach Array is a magnet structure, an engineering approximation of the ideal structure, whose goal is to produce the strongest magnetic field with the least amount of magnets.