ROKR Marble Run Kit 3D Wooden Puzzles Model to Build for Adults Birthday Gift

Wood Cool 3D wooden puzzles. Nice 4-5 hour wood DIY project. Once you finish your coaster, you can run marbles through it! It is ideal and creative gift to surprise friends, families on Birthday/Anniversary/ Christmas. Great STEM toy designed for adults and teenagers Combination of a puzzle and model wrapped up in a 3-D artwork Gear drive, we believe it is the coolest decoration and could give your inspiration while the ball rolling.