Ring Magnets
Ring magnets are similar to disc magnets, but with a hole in the centre. They are often used in motors, speakers or as fasteners. If the ring magnets are to be used in jewellery, you should consider choosing a magnet with a zinc or gold coating to avoid nickel allergy. The magnetic poles are always on the two flat sides of the magnets. If you are considering mounting the ring magnet with a screw, there are many other alternatives. You can see them below.
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