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Rings
Multipole Ring Magnets for Sensors - Dexter Magnetic Technologies
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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
Strong Ring Magnets 4 in OD x 3 in ID x 1/2 in Neodymium N42 - Applied Magnets - Magnet4less
Rare-Earth Ring Magnets - Lee Valley Tools
Ceramic Ring Magnet
Ring Magnets - Set of 6 at Lakeshore Learning
How do the field lines of a 'ring magnet' look like? Can you explain this with a diagram? - Quora
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