Even the highest quality knives lose their sharpness over time. Keeps yours in their best condition with this Twin Finishing Stone from Zwilling. Featuring two sides with different degrees of roughness, one has grain 3000 for fine honing and the other has grain 8000 for polishing. Ideal for both sharpening and smoothing your blades, it is measured according to the Japanese Industrial Standard. Key features: * Knife sharpener * Dimensions: H4xL20cm * For a professional, scalpel-like sharpness & reflective blade * Two sides with different degrees of roughness * One side has grain 3000 for fine honing * The other has grain 8000 for polishing * Ideal for sharpening and smoothing your blades * Measured according to the Japanese Industrial Standard * More kitchen accessories available from Zwilling