ROKR Marble Run 3D Wooden Puzzles – Large Mechanical Model Kits for Adults Construction Set Gifts for Teens/Family (Marble Night City)

Cool large marble run kit to build with 294 pieces and 10 steel marbles.Compatible with all accessories and see-through arcylic material. Final built of 12.8×8.4×9 in. Multiple tracks like waterwheels, flip-flop-splitter, a funnel, S slopes, U-turn slides, trap-doors, gradient slides. Handcrank to move the marbles down on crazy tracks! No glue or extra tool needed. Made of durable plywood. Non toxic.Precise laser-cut. Comes with an easy-to-follow manual. GIFT FOR ALL- Giftable 3-D wooden puzzles for adults and kids at special events like birthday, anniversary and Christmas. A bit challenging but really worth your time. Once assmebled, your proud is overwhelming. [Happy Guarantee] If you have any assembly question or need replacement parts, please feel free to tell us. We are glad to help you solve the problem.