Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent, but agressive

If you're someone who just wants a sharp knife with minimal effort, this is the 'steel' (not) for you. I do a real sharpening of my knives only every few years, basically because I'm just lazy. :) This ceramic steel really keeps a nice edge on knives without frequent sharpening, but it accomplishes that by being a pretty aggressive sharpener. But, that's fine with me.