Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great sharpening system

I purchased this item about two weeks ago and have sharpened a couple of my pocket knives with it so far.The Lansky system is very easy to use. The instructions are straight forward and there's an instructional video on the Lansky website (http://www.lanskysharpeners.com/video.php) too.The first knife I sharpened was old and abused, so I started out with the extra-course stone and worked my way up. I ended up with a decently sharp blade after my first attempt.The second knife I tried was newer and only recently dull. I started out with the Medium stone and worked through to the Ultra-fine. This produced a blade sharp enough to shave arm hairs without too much effort.