Ugears Tanker Mechanical Model Kit - DIY 3D Wooden Puzzles for Adults Truck with Working Engine - Moving 3D Puzzle Building Kits with Can Holder - Adult Puzzle Gift for Fathers Day - 594 Pcs
Functional Mechanics: 3D puzzles for adults features a four-cylinder rubber band engine with moving pistons visible under the folding hood and working transmission with forward and reverse driving modes
Innovative Tanker Design: Building sets for adults 3-d puzzles includes a specially engineered tanker compartment with a unique opening mechanism sized perfectly for standard 0.33L beverage cans
Educational Value: The open design concept reveals all internal mechanisms, providing a fascinating look into mechanical engineering principles and gear systems in 3D puzzles for adults wooden
No Glue Required Building Kit: Patented joint system allows all pieces to fit together perfectly without adhesives or special tools - just like a 3D brain teaser puzzles for adults
Exceptional Gift Choice: Perfect present for mechanics enthusiasts, model collectors, puzzle lovers or anyone who appreciates unique hands-on projects for Birthday, Christmas or Fathers Day
