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
40x15x5 mm Neodymium Magnet - Rectangle Super Strong
N52 Super Strong Round Cylinder Magnet 10mm X 4mm Rare Earth Neodymium Magnets - China Permanent Magnet, NdFeB Magnet | Made-in-China.com
12Pc Super Strong Neodymium Magnet 1.26" x 1/8" NdFeB Discs, The World's Strongest & Most Powerful Rare Earth Magnets by Applied Magnets: Amazon.com: Industrial & Scientific
Deago 40x20mm Super Strong Neodymium Rare Earth Disc Magnet, Permanent Magnet Disc, N52 Most Powerful Round Magnets - One Piece - Walmart.com
Super-strong neodymium magnets crushing a man's hand - YouTube