The knife sharpener with 2 stages with carbide and ceramic stoneshelps to restore a super sharp cutting edge to blunt knife blades that that have dulled with use.The ergonomic handle provides a comfortable and secure grip.The fixed stones angle provides correct sharpening every time.The rubber base prevents the sharpener from slipping while in use. Not suitable for serrated knives and scissors.Not suitable for dishwasher, cannot be soaked in water. After using the sharpener, rinse it with water and towel dry.