NEW ROKR 3D Wooden Puzzle Marble Run Model Building Kits Mechanical Puzzle

New. Sealed in box. This is marble run set that will definitely surprise you. Build this 3D wooden puzzle with your hands and watch the marbles run smoothly through those trapdoors. All mechanical-driven, with no battery needed. Top highlights 【Mechanical Gears】Build a 239pcs 3D wooden puzzle marble run set with big waterwheel lifter and funnel track. Full of gear trains, cams, ratchets and cranks. Loads of fun to rotate the handle and see marbles run crazy on different tracks! 【No Glue Needed】This 3D puzzle is made of durable plywood uses precise laser cutting, so parts fit smoothly together. No tools or glue are required. Rewarding building kit for anyone. 【Pakcage】The model kit comes with all accessories and a pictorial instruction book. Friendly to a beginner of 3D wooden puzzles. Ideal packaging as a gift to friends or family at birthday, Thanks Giving or Christmas. 【Brain Teaser】Building the 3D wooden puzzle uses your logic thinking, creativity and eye-hand coordination. Patience is the key to success. It relaxes your mind and makes you forget all the pressure while crafting. A little bit challenging but really amazing once you finish it. 【Unique Gift】This 3D puzzle will wow everyone who sees it. After construction it can be a unique decoration for office or home. Questions? Leave a comment below!