The Marble Run Link Pack is designed to connect two wooden marble run models: Marble Night City LGA01 and Marble Spaceport LGC01. This expansion kit allows both sets to be combined into a single, larger marble maze. The package includes a transmission shaft, connecting track, base connector, blue breathing light, and synchronous drive belt. Assembly typically takes around 3 hours. A touch switch controls the connecting mode: a single tap powers on the models with flowing light, another tap switches to constant light, and a long press turns the system off. By linking both marble runs, builders can expand the track layout with additional twists and drops for extended play. ROBOTIME provides assembly support for this 3D puzzle, ensuring a smooth building process. Customers can contact the company for assistance if needed.