The model uses a gear drive and a crankshaft connecting rod. Two gears of the same size mesh with each other. When one gear is shaken, the other gear will rotate in the opposite direction. When the gear rotates, the connecting rod moves back and forth to drive the butterfly wings.
Material: green wood
Type: STEM toys, DIY toys
Suggested Age: 6 years and up
Package: PE ziplock bag*
*Some orders are individually packaged in cartons, but this is not guaranteed.
Note: this is a DIY kit, you need to assemble it
WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.