Wusthof 9" Interrupted Diamond Sharpening Steel Unlike a traditional sharpening steel, a diamond steel like this Wusthof Knife Sharpener actually cuts a new edge on to your blade. The Wusthof 9-Inch Interrupted Diamond Steel Knife Sharpener is embedded with thousands of abrasive industrial diamonds in an interrupted surface pattern. These diamonds, being much harder than steel, will easily shave the fine edge off a dull worn knife, and the interrupted surface keeps the cutting edge cleaner for a better sharpening performance. This diamond Sharpening Steel also allows you to focus in on key areas of your knife that may need a little more sharpening. Wusthof Sharpening Steel Features: * 9-inch sharpening steel realigns as well as sharpens * Interrupted surface diamond-coated steel shaft * Keeps cutting surface cleaner for better sharpening performance * Slip-resistant plastic handle is molded for comfort * Stores in standard knife block with steel slot