Mola Structural Kits demonstrate complex architectural and scientific principles in a way that is both accessible and fun. Springs, bars and plates snap together with magnets to create buildings, bridges and more. The modular nature of the magnetic components means the construction possibilities are vast. Monochrome components and real-world technical applications make the Mola Structural Kits a bit more sophisticated than other building toys. An included booklet describes various sample builds and the engineering principles exemplified by each. Available in three different kits: Mola Kit 1 features fancy movement and splice connections, Mola Kit 2 is more basic but allows you to experiment with seismic behavior, Mola Kit 3 is more focused on bridges and tension members. All components are 100% compatible between sets. Inappropriate for young children due to small pieces.