Great Stones for a Not Quite There Sharpener
I never tried the sharpener but bought these stones in preparation for a marathon knife sharpening session.  It turns out I don't recommend the V-sharp device itself.  It doesn't sharpen about a inch of the left side of the blade due to the offset of the left stone beyond the right stone.  And the sharpener isn't that simple to get dialed in for a given knife which is a pain if your are doing your entire collection.
Rating: 3 stars