With Countersunk Hole
With Swivel Hook
With External Thread
Magnetic Pushpins
Precast Magnets
Without Hole
With Bore Hole
With Carabiner
With Screwed Bush
With Internal Metric Thread
Cup magnets, like other types of permanent magnets, are made of ferromagnetic material. The majority of them are made of neodymium. Neodymium, with the atomic number 60, is a rare-earth metal that produces an extremely strong magnetic field. Cup magnets will cling to the inside of a channel or cup, securing the object and preventing it from falling over. The interior of channels and cups is round, making them unsuitable for traditional square or rectangular magnets. A small magnet may fit inside a channel or cup, but it will not be flush with the bottom. Cup magnets are one solution. They are shaped in a round shape that fits inside most channels and cups.