Wicked Edge Precision Knife Sharpeners provide hunters, military personnel, law enforcement officers and knife enthusiasts with sharpening systems that are easy to use and produce spectacular, hair-whittling edges. Wicked Edge Sharpeners are manual sharpening systems that allow you to sharpen both sides of your blade at once, while maintaining a constant angle of your choosing. The diamonds we use on our stones are harder than any steel and make light work of the toughest steels out there. (less)