Review on Engine, Airbrush, and Spray Gun Cleaning Kit: DESIN Carburetor Carbon Dirt Jet Cleaner Repair Tools by Ivan Carson

These are great for cleaning injectors but be careful with carburetors. Stainless steel is harder than brass and you should not accidentally oversize the nozzles. But if you can't clean the nozzle, you'll need to replace it so you can try it out if gentler cleaning methods haven't worked. Please note the listing does not show how much you will receive but the photos show two sets and I received two of the same set. As I expect to use the smallest ones the most and they can fail, I'm glad I have two sets.