Pot magnets not only used as holding magnets
to hold a metal object, some special pot magnets can also use as search magnets to salvage under deep water.
Search magnets also are known as fishing magnets, salvage magnets, and magnetic fishers. The products are assembled with strong neodymium magnets and good magnetic conductive material. The magnetic conductive material assures the maximum magnetic force on the magnetic pole, and also protect the neodymium magnets from damage.There is no magnetic field on the non-working surface, just single pole magnets assembly in fact. The detailed structure can be known from the product picture and drawing.
We have single side search magnets and double sides search magnets available at present.