Throw away those messy sharpening oils and lubricating liquids! With the Chef's Choice diamond hone 10" sharpening steel, sharpening becomes a breeze. Diamonds are the hardest known material on earth. They will abrade all other materials, therefore Chef's Choice has developed this sharpening tool with 100% diamond crystals. The crystals are permanently bonded to the stainless steel support and will sharpen more aggressively and quickly without heating the ultra sharp edge. This high quality oval shaped instrument simultaneously steels, hones and realigns knife edges. It's lightweight and perfectly balanced, and boasts an easy-grip, nonslip textured handle. Shown with knife, not included.