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Geomag Pro-L is the evolution of the classic magnetic construction system. Designed for those who love challenges, the Pro-L line, thanks to the greater strength of its magnets, allows you to create ever more complex models and structures, giving greater scope to your imagination. The visible polarity indicator on the rods means you get to understand the true potential of magnetism and can build constructions that allow you to push to the edge of the laws of physics with greater ease.