I have really liked the quality of the products I have gotten from Kyocera. Pans, peelers, knives, slicers, and pens are all great. So I bought a few of these to give to my family that I had previously gifted Kyocera knives to, but when I tried it myself I found that for most of my knives I can't sharpen the inch closest to the handle unless it sticks out from the handle like the santoku or chef knives. It is easy to use and works on both ceramic and steel, but I was disappointed enough that I didn't end up giving them to my family members.