The 3D Puzzle Wooden Craft Kit is a toy that allows you to build mechanical models and

Self Propelled Wooden PuzzleWooden mechanical gears set is operated by a hand wound springno batteryno other power needself propelled but you need to use a little wax and the tool provided to make it move smoothly. Detailed English InstructionFollow the user manual provided in the brain teaser DIY puzzleand you will be able to install it.Making this mechanical model toy requires not only attentiveness but also patience.Feel the pride of assembling this entire IQ toy set-up with your very own hands. Manufactured by shangji. Creative GiftWhat a fascinating thing to see the mechanical miracle coming to life by your own hands.Creative gift for your boyfriendgirlfriendhusbandwife who is model builder or puzzle lover.It looks so cool and creates a decent challenge for an adult. Unforgettable Family TimeThe complexity of this 3-D Puzzle Kit will boost your child creativitybring families together for hours to create something truly unique to display in their home.Believe usthis is an unforgettable family timeyou will be surprised by the child's hands-on talent. Laser-Cut Model KitUnique Mechanical 3D Wooden Puzzlelaser-cut ply wood materialno tonxicenvironmental friendlysmooth wooden board.All pieces are pre-cutno glue needed.The interlocking mechanisms are pretty ingenious.