My wife always bugs me to keep the kitchen knives sharp. I can sharpen a knife with a stone and some oil, but my sharpening angles are never correct and the edges are not long lasting. The Wustrof 3 Stage Knife Sharpener solves all of that. The first stage applies the correct bevel to a knife and the second hones that edge.Every knife in the house, including small pocket knives are all sharp and easy to maintain. Now, with this tool, I can show my manly knife sharpener skills without frustration. I liked the thing so well, I have bought one for my 80 year old father-in-law who is the cook in the family.