Expand your projects with the Geomag PRO-L line and watch as your structures increase in size and complexity with this 50 pieces kit. This box contains: 15 non-magnetic metal spheres; 17 magnetic rods; 10 plastic transparent triangular panels, 6 squares and 2 pentagons. The Geomag PRO-L line is the new series of 58mm rods that allows to build models like real Geomag experts. The magnetic rods contain stronger magnets to create bigger and more complex structures. Another major innovation is the presence of visible polarity on the rods, which helps to intuitively use magnetic properties to create wonderful models.