This small and compact knife sharpener packs a mighty punch! Safely and securely sharpen virtually any knife in your kitchen by securing the Kitchen Shark knife sharpener to a flat surface with the in-built suction base. Tungsten Carbide teeth set at 20 degrees give the perfect finished edge to any blade. To sharpen a blade, simply secure the sharpener with the in-built suction pad, draw your knife through the Kitchen Shark knife sharpener between 3 and 5 times applying light to medium pressure. Your knife will be as sharp, or sharper, than when it was new! Ensure to wipe the blade with a cloth or damp sponge prior to use.