ROKR 3D Wooden Puzzle-Self Propelled Mechanical Model-DIY Building Kits-Brain Teaser Games-Best Gift for Boyfriend or Girlfriend on Birthday/Anniversary/Valentines Day/Christmas(Locomotive)

Laser-Cut Model KitUnique Mechanical 3D Puzzle,laser-cut ply wood material,no tonxic,environmental friendly,smooth wooden board.All pieces are pre-cut,no glue needed.The interlocking mechanisms are pretty ingenious. Self Propelled Wooden PuzzleWooden mechanical gears toy is operated by a hand wound spring,no battery,no other power need,self 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 puzzle,and 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. Creative GiftWhat a fascinating thing to see the mechanical miracle coming to life by your own hands.Creative gift for your boyfriend,girlfriend,husband,wife who is model builder or puzzle lover.It looks so cool and creates a decent challenge for an adult. Happy Family TimeThe complexity of this 3-D Puzzle Kit will boost your child creativity,bring families together for hours to create something truly unique to display in their home.Believe us,this is an unforgettable family time,you will be surprised by the childs hands-on talent.