Very impressive! I highly recommend it to everyone for home use.
I even tried it on a very old knife that hardly cut at all.
Tips: The sharpener should be wet before use and rinsed (and dried) afterwards.
Sharpening should be done back and forth 15-20 times, depending on how worn the knife is.
Do not cut on glass surfaces and do not throw loose knives together with other kitchen tools.

Not suitable for serrated knives!