Edu-Toys  Leonardo Da Vinci   Mechanical Drum Make a Da Vinci inspired working mechanical drum Inspired by the genius and drawings in the notebooks of Leonardo Da Vinci Snap-Together assembly No glue required Another fun and educational product from the company that brings you Snap Circuits Make a Da Vinci inspired working mechanical drum Inspired by the genius and drawings in the notebooks of Leanardo Da Vinci Snap-Together assembly No glue required Another fun and educational product from the company that brings you Snap Circuits