Smith's counter safe deluxe knife and scissors sharpener is specifically designed to sharpen the finest cutlery, as well as right or left handed scissors. This unit has an exclusive flip down counter guard to protect tables and countertops from damage during sharpening. Plus, it is the first manual sharpener to offer Coarse and Fine sharpening slots for both knives and scissors. The knife sharpener features carbide blades for quick edge setting and triangular shaped ceramic stones for final edge honing. Because of the ceramic stones special shape, they can be used on both straight or serrated blades. The carbide blades and ceramic stones use pre-set sharpening angles to get the proper sharpening angle and guaranteed results every time you sharpen your knife. the scissors sharpener uses a patented floating ceramic rod that adjusts to fit the precise bevel of the blades.