first4magnets F648-1 50 x 25 x 10 mm Thick N42 Neodymium Magnet with 32.2 kg Pull : Amazon.de: Business, Industry & Science
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Magnetpro neodymium disc magnets, 28 x 5 mm, super strong 20 kg tractive force with steel cup and screws (pack of 6). : Amazon.de: Business, Industry & Science
Magnetischer Pol-Finder zum einfachen Bestimmen der Pole am Magnet - schwarz | MTS Magnete - Der Magnetspezialist