Pros: Effectiveness, Durability, Overall Quality
Sharpen dullest Blades Quickly
We have used these stones thousands of times.used on every knife steel M-390,Elmax,CM154,Schliepner,S30V etc, It cuts them all. These type stones do not get a bow in them and cut for years. Stones with various shapes and sized holes in the surface do not put as fine and even finish on the edge as these. When new there is a fair amount of"chafe" on the surface that must be worn off, once done they perform consistently. They don't state the grit size but I don't consider these to be fine.They will take a dull edge to a usable edge and from there you can continue with ceramic or other finer abrasive to the desired edge. These are how ever fast, and have slip resistant base. For this price you can't make a mistake.