High-quality material: Magnetastico magnets made of NdFeB (alloy of neodymium-iron-boron) with today’s highest possible magnetization of N52! Attached quality adhesive strips: 20 pieces rectangle 20x10x1 mm large self-adhesive strong neodymium cuboid magnets with one-sided branded adhesive foil (peel-off foil) and an extra strong adhesive tape of the well-known company 3M (type 468MP)! High-quality magnet coating: Triple coating of magnets with nickel-copper-nickel (NiCuNi). Thus, the magnets have a smooth surface for high resilience and relative insensitivity against external influences. Magnetised in pairs: You will receive half of axial magnetised self-adhesive magnets with adhesive surface at the magnetic South Pole and half on the magnetic north pole! This is of importance, for instance, when you would like to directly connect two fixed magnets! Extremely versatile in use: kitchen, office, model making, repair shop, installations, bathroom, crafting and much more. Those magnets have very strong, high tensile and adhesive force and are not toys!