I got the Ninja Foodi Never Dull System Premium German Stainless  Steel Chef Knife and sharpener through the tryit sampling community.  I must say I'm super impressed by this kitchen gadget . It's so easy to use and had great features.  The way it locks to make sure your Knife is safely sharpened without fear of pulling it out . I love that you can use a variety of knives so you can sharpen all your kitchen knives . The fact that it has two Knife sizes is another great feature . It's so sleek and wonderfully made . This thing is amazing. I would definitely recommend this to anyone looking for a new Knife sharpener .