Its very important to have sharp knives when doing any cooking. These Ninja Foodi Never Dull Essential Knives are razor sharp. They make cutting quick and easy. I feel like I am using professional knives when I use these. Love that they are lightweight and comfortable in my hand. Great for cutting everything from delicate fruits and veggies to thick cuts of meat. The built in sharpener is awesome. This way your knives are safely sharpened the correct way.