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 &
200pcs 4x1mm Mini Small Circular Magnets 4mmx1mm N35 Neodymium Magnet Dia 4x1mm Permanent NdFeB Magnets disc 4 * 1mm: Amazon.com: Industrial & Scientific