I was only a little skeptical whether so small magnets can serve their purpose. Now I'm going to have happy bought the cubical because they adhere so tightly that they can solve difficult. The shape, however, can they attack very well. Whether that with rounds also works so I doubt. Meanwhile, I am annoyed that I have only 100 ordered. This can keep the class so they are used anywhere. With only a small cubes postcard holds even on a painted surface on.
