Global 9.5in Ceramic Sharpener has a ceramic-honed surface to maintaining or re-aligne the knife's edge. Holding the knife at a 10-15 degree angle and making several strokes to both sides of the blade will quickly true the edge. The sharpener is carefully weighted and features the same distinct handle design as the knives. This 9_in Ceramic Sharpener is good for maintaining all your knives on a monthly basis or depending upon how often you use your knives. Replacement 9_in Ceramic Rod is available.