This is a fantastic grinding device! This is something I've never experienced before. Easy to handle, a good description of the use (not the Chinese type descriptions :-)). He not only sharpen my knives "super" well, but even my scissors and even ice skates! This is a really cool sharpener and I can recommend it 100%! Great buy! Even the sales department works very well: I had a question about the product and got a response within 24 hours. That's what I call good service!