3 kinds of playability: 1. Windmill: use gear transmission to achieve work. Thanks to the zipper gear acceleration device, the blades rotate faster and the airflow accelerates, converting kinetic energy and wind energy. 2: Projectile: Use the principle of leverage to achieve work. Fix the projectile with a pointing point, throw the object into the pan, press the other end quickly, and the object will fly out along the parabola. 3: Small windmill: The construction of the small windmill makes the blade turn faster by using the principle of large gears to accelerate the pinion. There is an idler between the big gear and the pinion, and the idler changes direction and does not function as a transmission.
Material: Environmentally friendly ABS
Number of particles: 50 Pcs
Applicable age: 6 years old or older
Retail box size: 33cm x 23.2cm x 6.5cm ?€€