where they are put together calmly and slowly with 2 hands and not where the magnetism is allowed to control the coupling of the magnets

and in direct pull (from the ceiling down in a vertical line) you can hang up to 18 kg

in strength at each end

so you will receive a carton with a nice mix of the colors shown (white

25 x 25 x 8 mm

Power magnet, Blok 25x8x4 mm. engros where they are put togetherNeodymium magnets Strong NdFeB magnets Length: 2. 5 cm. Width: 0. 8 cm. Height: 0. 4 cm. Strength: approx. 4 kg. Rectangular power magnet with incredible strength. Do not underestimate what 4 kg. in direct pull can do, and 2 magnets against each other in collision can do quite a lot of damage. So watch your fingers and keep magnets at a good distance from each other (min. 10 cm.), if they are not fixed in place. SPECIFICATIONS: Strength: approx. 4,000