Very bad, I fell into a defective one, bought to replace exactly the same one which after many years had rusted (although it sharpened perfectly). Unfortunately, whether I used the knife or not, the result was the same, no trace of sharpening.

2/9/21 I bought it again because in a conversation I had with a seller when I told him about the problem I had, he explained to me that there is also a Chinese version, the made in Italy, new, sharpens decently.