Wüsthof Pull Through Sharpener (3069730102)

Place the sharpener on a flat work surface and hold the E-Z grip handle with one hand and the knife handle with the other. Insert the knife blade fully into the slot at a 90-degree angle to the sharpener and pull back a few times to sharpen.After setting the knife's edge with the carbide side, use the unit's ceramic side to nicely finish the edge.This sharpener is designed to sharpen a knife at 14 degrees per side.