Made with recycled plastic, Geomag Mechanics Motion Gears Recycled 160 pcs combines the force of magnetism with mechanical construction. Geomag Mechanics Motion Compass 35 pieces stimulates children's creativity, inventiveness and a hands-on approach to problem-solving. In addition to magnetic rods and steel spheres, Geomag Mechanics adds mechanical elements within the construction platform that allows for expanded play possibilities. Structures rotate by triggering chain reactions using magnetic attraction and repulsion. STEM.org authenticated toy that helps in the development of creativity, fine motor skills in addition to stimulating imaginative play and curiosity through the science of magnetic construction.• Magnetic construction platform that combines magnetism with mechanical construction• Made with 80% Recycled Plastic• Build chain-reaction movement and rotation by using magnetic attraction and repulsion• Designed to help stimulate children's creativity by allowing for expanded play possibilities• Promotes hands-on learning and offers a creative approach to problem-solving• STEM.org authenticated