Herb strippers are tools which help remove leaves from stems.
When you are using fresh herbs like cilantro or parsley you want to have mostly the leaf part and not any long stems.
Using a herb stripper allows for quick and clean stem removal. Depending on the width of the hole or gap you use you can chose to have some stem or no stem at all as a result.
If you are using a larger amount of these herbs you have probably tried to wrap you hands around the leafy part, held on to the stem side and pulled. It likely didn't go well. This will result in a mess and your herbs will still have pleanty of stems.
There have been many tries at solving this issue.
As a result, there are many different looking types of this tool.
There are three main ways tools have come up with to remove leaf from stem:
Holes: The thing that most have in common are round holes or differing sizes. Most tools will have holes in it. This is the most effective type because the stems can not pop out of the holes.
Grooves or gaps: Some tools will have a gap where you can supposedly slide the stem into and then pulll to srip. In our experience these do not work as well because the stems will work themselves out of the gap as you try to use it.
Blades: There are strippers that will have blades. While a blade can be a useful addition to a utensil like this, it should not be a blade only. That doesn't make sense because we already have knives in our kitchen.
The best tools have a combination of the above mentioned things. It should also be noted that tools with both large and small holes will become useful for larger plants as well.