I received my Ninja Foodi Never Dull Chef Knife a few days ago. It came with it’s own knife sharpener. The knife feels great in your hand. It is weighted just right. It makes quick work of chopping vegetables for a stew or roast. It is very sharp and slices right through your food. It suggests using the knife sharpener every two weeks to keep it sharp. I was very impressed with the looks and feel of the knife.