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Amazon.com: Applied Magnets® 4" x 1/2" x 1/2" Strong Neodymium Block Magnet : Industrial & Scientific
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CMS MAGNETICS - Rectangle Neodymium Magnet Bar (1 ct, 3” x1/2" x1/4”) - Rare Earth Rectangle Magnet for Crafts, School Projects & Magnetic Therapy, Pack of One Rectangular Neodymium Bar Magnet: Amazon.com:
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