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Magnet Ring - 3/16": Amazon.com: Industrial & Scientific
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Cylindrical Magnets | Neodymium Magnets
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Amazon.com: Applied Magnets: Diametric
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Applied Magnets Neodymium Magnet 2-Inch OD x 1-Inch ID x 1/4–Inch Ring : Industrial & Scientific - Amazon.com
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CMS Magnetics® Grade N52 Super Strong Neodymium Magnet Ring OD1.26" x ID 1/2" x 3/8" - Rare Earth Magnet Ring for Classroom, Science Project and DIY Applications - One Pack: Amazon.com: Industrial
N52 Sintered Ring NdFeB Magnets Permamemt Nickel Coating Neodymium Magnet - China NdFeB Magnet, Ring Magnet | Made-in-China.com
20 x Ring Magnet Magnetic Ring Diameter 6/3 x 2.5 mm - Neodymium N42 (NdFeB) Nickel - Diametral Magnetic - Adhesive Force 800 g - Strong Rare Earth Magnets in Ring Shape (
Super Strong Neodymium Magnet 0.4 x 2.4" N52 Diametric Cylinder, magnetized Through Diameter Permanent Magnet, The World's Strongest Rare Earth Magnets by Applied Magnets: Amazon.com: Industrial & Scientific
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Super Strong Neodymium Magnet 0.4 x 2.4" N52 Diametric Cylinder, magnetized Through Diameter Permanent Magnet, The World's Strongest Rare Earth Magnets by Applied Magnets: Amazon.com: Industrial & Scientific