The initial reviews let us hope for a really inexpensive knife sharpener. After it had disarmed our old (in the truest sense of the word), we ordered it on Amazon. Due to high demand the delivery took a little longer! We were really excited at the beginning, how strong he sharpened our knives. Now we have him for half a year and looking for a new knife sharpener. From the initial focus may not have much left! The stones are apparently worn down, that we only can it be exchanged for a new device! Who buys cheap, buys twice!