Too coarse

For Notfallnachschärfen in woods and fields, I would say: Taugt.
But the grinding result is very rough, with the polish on a Wasserstein can not keep that. Furthermore, the part is really just for the thin blades of Victorinox Suited with a grinding angle of exactly 20 degrees. If you have your knife before bearbeited with the grindstone in different angles, you can look forward to a nice surprise scratch.

But generally speaking, to the price ...

It is good already. Functioning tuts yes and it's better than nothing go. Especially very easy. Actually, more tendency to 4 stars.

Kaufempfelung for Victorinoxmesser.

(Although some youtube video claiming it would be to use with Leatherman or Opinelmesser that not doing !!)

Edit: Since the Internet circulating in opposite information, here the correction: The bar has a 350er grit and is NOT to pull, but for grinding coarse nicks. You mean if the knife just to be sharpened only using the V-grinder and the bar only if the blade is damaged by notches in the cutting, etc.