Fast Edge II Sharpener & Hone with Auto Adjusting Inserts Knife Sharpener, 3.7′ tall x 2.2′ wide x 3.750′ long, Black FastEdge II Knife Sharpener and Hone with spring loaded Auto Adjusting Tungsten Carbide Inserts. Fast Edge II makes knife sharpening any knives easy with its patented design. This sharpener will make all your straight edge steel knives razor sharp with just a few passes. Days of dull knives are gone with the Fast Edge II knife sharpener. The Spring loaded Tungsten Carbide inserts provide superior sharpening by adjusting to your specific blade angle and keeping a consistent cut along both sides of your knives for a razor sharp beveled edge. How to Sharpen: Hold sharpener down on one side with sharpening and honing diagram facing you. Place heel of knife blade in sharpener with tip down. Press down and pull knife through with upward diagonal motion until tip comes out of sharpener. Repeat 2-3 times for a razor edge. Wipe your knife clean after sharpening. How to Hone: Hold sharpener down on one side with sharpening and honing diagram facing you. Place heal of knife blade in sharpener with the tip up. Press down and pull knife through with a downward diagonal motion until tip comes out of sharpener. Repeat 2-3 times and your blade is honed & ready to use. Wipe your knife clean after honing before cutting food. How to Wash sharpener: Tap sharpener lightly upside down to knock off any steel chips or filing. then rinse carbide inserts under warm water. Shake out lightly and towel dry. Holes in the bottom will allow excess water to drain.