Air Vehicle

MECHANICAL GEAR DRIVE - It takes the spring potential energy as the power output, and the whole mechanical gear structure transmits the power to experience the pleasant feeling of mechanical transmission. Items Included: Wooden Pieces Number of Pieces: 229 Difficulty Level: ★★★★☆☆ Assembly Time: About 5h Age: 14+ Package Size: 37025050.5mm Assembly Size: 300215250mm