Pros: I did not purchase this product from Global, but feel compelled to rate it. I am an avid sewer, and have several machines. This product has saved me a lot of money on service calls by allowing me to do complete cleaning of my machines myself. My husband also uses them in his shop for the same thing. They are small enough to get into spots that you would never be able to clean otherwise. Highly recommend this set.
Cons: None so far.