The Wusthof Two-Stage Hand-Held Knife Sharpener is safe and easy to use.

Directions:

1. 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
2. After setting the knife's edge with the carbide side, use the unit's ceramic side to nicely finish the edge 
3. This sharpener is designed to sharpen a knife at 14 degrees per side