Pros: It gives a pretty decent quick "starter" edge to any dull western-style knife
Cons: You will not get a fine edge with it
I bought this sharpener about a month ago at Costo. I had wanted a diamond grinder for a while to bring back some older knives I had. For that it is superb. It will give a very dull knife an edge sharp enough to shave your arm in very short order. However, if it's a high quality knife you'll want to stop there as you'll just ruin the blade trying to get it any sharper. I then took those knives and spent some time on a King water stone, then a very fine ceramic stone to polish the edge. Sharp as a razor now. Also good for sharpening a machete, hunting knives, etc. Highly recommend it for the purpose I described.