I had just received from Amazon and other magnets they could fulfill their task not because they were simply too weak.
These are right for their size powerhouses. The adhesive force is given with 6 kg of and you have to actually draw quite get from a metal object back to an individual. Also separating the magnets from the 50's stack is a bit of a challenge. But it should also be yes ... :-)
For someone who wants to hang just two or three sheets of paper on a magnetic board, these magnets are here probably a lot too.
