GraviTrax goes vertical with the GraviTrax PRO Starter Set. With 149 elements that include unique components, this set offers everything you need to begin building your own vertical action-packed track systems. Build with walls, pillars and balconies that can be attached together to form three-dimensional structures. The elements can be integrated seamlessly with existing GraviTrax sets, allowing you to create more dynamic marble runs. The pillars have special notches to connect them with the transparent walls and create more intricate paths for the marbles. Suspend your tracks in air with the balconies. This STEM system [Science, Technology, Engineering and Maths] is an ideal one to teach kids about gravity, magnetism, kinetic energy and fun. Hit a snag? Freestyle with your own track design or use the tasks and blueprints included to help you to get started in the world of GraviTrax! Are the gravity spheres stopping or flying off before reaching the end target? Time for some problem-solving. Rebuild and try something different! The GraviTrax track system can be extended indefinitely with extra track packs and add-on’s – each sold separately. Suitable for ages 8 years and up. Contents: 2x Sets of Instructions 4x Card Bases 1x Transparent levels 6x Gravity Spheres 3x Long Rails 6x Medium Rails 9x Short Rails 1x Magnetic Cannon 28x Curved Bases 4x X intersection Bases 1x Vortex Base 2x Y Points Bases 1x End target 1x 3in1 Base 4x Bases for inserts 1x 3 Way Starter Base Insert 2x Catcher Base Inserts 2x Switches 1x Base Insert 1x Free Fall Base Insert 20x Large Vertical Tiles 9x Small Vertical Tiles 8x Pillars 4x Tunnel Pillars 2x Walls Long 3x Walls Medium 1x Wall Small 16x Balconies 4x Double Balconies