I’m so in love with my new Ninja never dull essential knife set. First off I love how sharp these knives are and the fact that they stay sharp for 10 years is just amazing I especially like the built-in knife sharpener however, I don’t believe however ever need it since these knives stay sharp for 10 years all of my food prep time has been greatly decreaseddue to how wonderful these knives perform, I highly recommend these to anyone and everyone who prepares food at home. These are amazing.