A Perfect STEM Toy: Gives pupils an opportunity to learn worm-gear design and switches to build a funny elevator model.

Let's Learn:
• Learn the principle of worm transmission, which is composed of worm and gear.  
• Cultivating children's interest in learning and desire for knowledge can help improve their academic performance.
• Build and reinforce structures. Scientific knowledge in small production can lay a foundation for future inventions, mathematical and physical learning.

Application: Perfect for school, home and any education institutions.

Packaging:

1 material kit/OPP bag, 
24 OPP bags/box,
12boxes/ctn.
Box: 28*23*23cm
CTN:70*58*48cm