Finally, a Knife Sharpener anyone can use! No more messy oils or stones or confusing grit choices. In about 10 seconds, you can sharpen almost any edged knife or tool to a fine, lasting edge. And, YES, it will sharpen serrated blades! A favorite among sportsmen, craftsmen, and chefs, the large ergonomic handle fits either hand safely and securely and the full length finger guard protects your fingers.