So for sections of this kind he is to very good use, because it is small thin and you can take it anywhere.
For other types of blades, it is less useful because you should grind each blade, among other things, depending on their strength in different ways in order to obtain an ideal result.
This note when buying.
An additional advantage is that you can, without having big idea within 2 minutes being Swiss has sharply again.
Costly and professional grindstones it need have more idea.
So the sharpener is worth taking into account its intended use in my opinion 5 star.
Incidentally Made in Germany.