Product review (3 stars): more for jewelry
These weren't exactly what I expected. I wanted to use them in order to "steam punk" up a few things. Also as models for designing geared mechanisms. They are more suited towards being jewelry or pendants. The gears themselves are a good deal smaller than I expected with the largest being about an inch and a 1/2. I'll likely still use them in class with my students.  I received this product at a discount in exchange for my fair and honest review.