Realth Tiny Disc Magnets Neodymium 0.16” x 0.08” 100 Pack Small Rare Earth Magnetic Mini Round Magnet for Science DIY Project Miniatures Magnetic Switch Teaching and Craft(MC100): Amazon.com: Industrial & Scientific
Amazon.co.jp: Round Magnets, Small Round Disc Magnets, Super Strong Neodymium Magnets, Hot Small Round Magnets, Strong Magnetic Rods, Rare Earth Material Diameter, Dia 0.4 inches (10 mm), Super Strong Magnets (Color: 10
1/4 x 1/8 Inch Small Neodymium Rare Earth Permanent Disc Magnets N52 (96 Pack) for Sale | totalElement