The Global Ceramic Water Stone Sharpener consists of two ceramic wheels. The first stage is a white coarse wheel and the second stage is a pink fine wheel for a complete sharpening process. Directions Pour water into the compartment of the sharpener and keep it there during sharpening operation. The water in the wheel compartment serves always to rinse the revolving ceramic whetstones and to prevent over-heating the knife blade. The sharpener should always be rinsed with clean water by removing the cover after use. To keep the sharpener steady, firmly grip the handle with one hand. Hold your Global knife with your forefinger on the back of the knife and place the knife blade vertically into the Coarse White Wheel. Move the blade back and forth with slight pressure 7 or 8 times (15 strokes with other knife brands), or as necessary without heavy pressure. Next, place the knife blade vertically into groove the Fine Pink Wheel and move the blade back and forth with with slight pressure 7 or 8 times. It is very important not to apply too much pressure when passing the knife through the sharpener, as doing so may cause damage to the wheels. When sharpening is complete please hand-wash knife blade in hot water and carefully dry with a dry towel or cloth before use.