With the GraviTrax PRO Extension Vertical, you can expand your existing marble run system upwards. The set contains twelve pillars, four walls, and 16 balcony elements, allowing you to guide marbles flexibly across multiple levels. The included components enable space-saving constructions, tunnel passages, and free-floating track sections. The combination of two long and two medium-length wall elements creates versatile support options for rails and marble elements. Multilingual assembly instructions provide concrete templates and make it easier to precisely plan new track layouts.