["[Youll want this!] After owning 3d puzzles Marble Night City LGA01 are you curious about how to combine the two models like in the video to expand into a larger marble run? Now were here! ROKR has designed this Link Pack LG01 and Marble Spaceport LGC01 Combination kit. What are you waiting for? Come and try to experience double the fun!" [How to assemble?] This connector puzzle kit has a total of 654 pcs. Simply follow the steps in the instruction manual patiently assemble them and combine them with the LGA01 product you purchased separatelythen they can be assembled into a large marble run model by you. Share your assembly time with us to help us understand the need for continuous product optimization. [Function upgrade!] The LG01 has central drive shaft is an essential support for gear rotation with extended track planks leading to Night City LGA01 and Marble Spaceport LGC01 and blue light strip base can illuminate the model. The assembly kit includes the motor of LGC01 productand need USB-C connector. [Meaningful toys] ROKR has always adhered to the concept of combining education with entertainment accompanying you to grow together. The process of assembling puzzles is helpful for the growth of spatial imagination. Watching the ball fall from the gear and operate on the track can exercise your logical thinking ability. "[ROKR is here] If you have any assembly question or need replacement parts during the building process you dont have to worry ROKR will provide you with solutions and guidance."]