The problem with this one is that after you finish sharpening, it will leave a mark on the blade of the knife. Otherwise, it is convenient and ideal for more inexperienced users who want to learn how to sharpen.

a complete plastic scam... it does nothing. wasted money. the thin knives go inside and you can't sharpen them... Stay away...

Good for large and wide knives. It doesn't work for small ones. Also, the angle is not adjustable. It always works at the same angle. I consider it expensive