Magnet Expert Ltd Powerful Neodymium Magnet N42 with lifting eye Strength 11 kg Diameter 20 mm (Tools & Accessories)
Bought to magnetize tools (screwdriver, ...) by rubbing rapidly over this small magnet. It works as well as or better than a specific hypnotist (and with his ring, it is held well in hand): p I know this is not the purpose of this type of magnet ...
