Patent American made Knife sharpener that will sharpen any style serrated edged knife. Like Bread knives, Steak knives and any Pocket knife with teeth. Block’s sharpeners are simple to use hand held sharpeners that can sharpen all your Kitchen knives, Pocket knives, and lots of odd shaped cutting edges that other sharpeners can not sharpen. You can see our live how to videos on our website. (theblocksharpener.com) or just You-Tube Block sharpener.