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Rare Earth Ring Magnets
We currently offer only 5 sizes of rare earth ring magnet; all are magnetized such that the north and south poles
are on the flat surfaces. Each can be used to build a simple loudspeaker. The large black ring is a ferrite shown for comparison.
You can also use them to retrieve metallic objects by tieing a string around them.
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| ~25mm (2.5cm) = ~1 inch; 2.5mm (0.25cm) = ~ 1/10 inch; 3E=x 1000. |
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