40x20mm Super Strong Neodymium Disc Magnet, Powerful Magnet Disc Permanent Rare Earth Magnets for Science Project Building Fridge Craft and Office (Two Pieces): Amazon.com: Industrial & Scientific
J.Burrows Super Strong Round Magnets Chrome 6 Pack | Officeworks
10Pc Super Strong Neodymium Magnet 1.26" x 1/8" NdFeB Discs W/ Red dot to indicate North Pole, the World's Strongest & Most Powerful Rare Earth Magnets by Applied Magnets: Amazon.com: Industrial &
Deago 40x20mm Super Strong Neodymium Rare Earth Disc Magnet, Permanent Magnet Disc, N52 Most Powerful Round Magnets - One Piece - Walmart.com