When you own a serious set of knives, you have to mean business when maintaining and honing your blades. Whether they are fine-edged, serrated, or specialty Asian blades, use the WÜSTHOF Universal 4-Stage Handheld Knife Sharpener! This handheld sharpener features a durable, ergonomic easy-grip handle that allows for safe handling. Clearly labeled to simplify your sharpening process, this sharpener features a 2-stage sharpening system for both standard blades and Asian blades for a total of 4-stages. The V-shaped notches feature 2 carbide sides for setting the blade's edge and two ceramic sides to finish the edge. All you need to do is guide your knife through the notches a few times for quick results. The WÜSTHOF advises that you sharpen your knives once a year and hone them regularly as you use them. With a lifetime warranty, the WÜSTHOF 2-Stage Handheld Knife Sharpener is the perfect solution to keep your knives ready for meal-prepping action!