N42 Neodymium Square Magnet - 7/16" x 7/16" x 7/16" thick - 7.72lbs Pull
Amazon.com: CMS Magnetics Super Strong 1" Cube Neodymium Magnets in a Tin Box for Added Safety | Rare Earth Magnets as Stud Finder and Science Project Magnets : Industrial & Scientific
50pcs 10mm x 5mm x 2.5mm thick N35 Super Strong Rare Earth Neodymium Block Magnets - BUYNEOMAGNETS
Pack of 16 Neodymium Cube Magnets Extra Strong Set for Glass Magnetic Boards Fridge Memo Board Whiteboard School Teacher Map Office with Storage Container Silver(10*10*10mm) - Walmart.com