The 5-IN-1 Knife and Scissor Sharpener is very easy to use. It restores a very sharp cutting edge to knives and scissors. Using this tool prior to using the knife every time will ensure that your knives have a very sharp edge making them easier and safer to use. A dull knife is more dangerous than a sharp knife.
I bought this to sharpen my knives when they get dull and I love how convenient it is to use. Overall, it's been working well and I will continue to use it to sharpen my knives when they get dull.