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These are thin and flexible, about 2 mm thick 400 gauss magnets. Features alternating parallel north and south multiple magnetic poles. Durable gold foil on one side and backed with a fine mesh comfort fabric on the strongest side, which is the side applied to the body.
MD 2803 Multi-Pole Flex Magnet Disc 5 cm 磁片，圓型 5.0 cm
Disc shape 5 cm ( 2")in diameter.
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