ROKR Marble Run 3D Wooden Puzzle Roller Coaster Mechanical Model Self Craft Deco Education Gift

DIY AUTOMATA KIT – This ROKR wooden puzzle is made of sturdy plywood. Once assembled, turn the crank, watch the steel marbles run crazy down the tracks, much like a roller coaster ride. Loads of fun to play with family or kids. MECHANICAL CHARM – The building model kit uses use gear trains, cams, ratchets and cranks to make the mini-machines move. Laser-cut wood is durable with smooth surface. Every part fit well together. No tools or glue required. STEM EDUCATIONAL TOYS – The ROKR puzzle combines mechanical engieering with playful games. It invloves spacial thinking, hand-eye coordination and some imagination. Its more than a pleasant family project, but also a learning toy to improve concentration,creativity, fine motor skills. After completing, the sense of accomplishment is overwhelming. IDEAL GIFT & FINE ORNAMENT – This wooden puzzle is an amazing gift for adults and teens at any occasion, like birthday, Easter Day, Christmas, Mothers Day. In addition, it can be a unique display at home or office. HAPPINESS GUARANTEE: Need assembly tips or replacements We could provide customer service for you anytime (there may be delay on weekends or holiday).