DIYMAG Powerful Neodymium Disc Magnets with Double-Sided Adhesive Strong Permanent Rare Earth Magnets for Fridge DIY Building Scientific Craft and Office Magnets 1.26 inch Diameter Pack of 6
It has a tensile force even larger than a 3 inch diameter ferrite magnet.
DIYMAG Powerful Neodymium Disc Magnets with Double-Sided Adhesive Strong Permanent Rare Earth Magnets for Fridge DIY Building Scientific Craft and Office Magnets 1.26 inch Diameter Pack of 6 Price in USA