Orange Ninja 4-Stage Knife Sharpener & Serrated Knife Sharpener– Repairs, Sharpens & Polishes Blades with Ergonomic Non-Slip Grip by Sharp Pebble

I purchased this after seeing a friend use his. He said it's the best, and I believe him. I bought it for my husband because he's the one who complains about dull knives (rightly so!) and the knife sharpener we had just wasn't doing the job. He likes using it which means he DOES use it and my knives are sharp, which is safer than a dull knife any day. We both like cooking and it's a pleasure to use a sharp knife.

Works fairly well, not sure on how long it will last.

I had an old knife sharpener that desperately needed an upgrade. I am very pleased to have selected the Ninja sharpener. Very easy to use and the results were on point! Sharpness you can expect from other tools costing so much more.

excellent knife sharpener. Very easy to use and really does the job on dull knives.

This unit does okay, but not spectacular. Make sure that you wash the knife after you sharpen it to clean the residue off.

Sharpens my large kitchen knife very well. It is manual so not as fast as an electric sharpener but you have better control. Remember only go one direction !

easy to use for kitchen knives. Will see how it holds up over time.

Works well. We sharpened several style knives and they all seemed to work well.