I got one of these as a stocking stuffer 15 years ago from my uncle. To say I was thrilled would not exactly describe how I felt about it. But he was enthusiastic and so proud of this wonderful gift. He went right to the kitchen and got out knives and proceeded to show us. Well, ya know what? For once, it was just exactly what it said it was, a fantastic knife shapener. I have used nothing else for 15 years, I use mine on scissors, and kitchen knives. I didn't know until today that they had other kinds. I was so happy to see this today as a multi-pack deal. I will be ordering one for myself and one for my daughter, son, and mother. I promise, if you get this sharpener you will love it. I have used it on serrated knives, carbon steel, stainless, all of them, and it works on all of them.