For the low price I paid for the Samurai Shark, I didn't expect a whole lot from it. But I was pleasantly surprised to find that it did more than I expected. I have used it to both sharpen scissors and knives, given that it has a great feature that allows you to sharpen either knives from a V-shaped sharpening area or scissors from a retractable wedge shape. While I know that the sharpening tool does not do an amazing job on sharpening (I believe only a professional can do more than honing a blade). It does do a great job on the blades I own for a short term fix. I don't currently own any blades that are considered investments, so this gadget is a great way to temporarily sharpen scissors and knives that I don't plan on keeping forever. The results only last a few months, but it is definitely worth it for what I paid.