Restoring dull kitchen knives, steak knives, pocket knives, and serrated knives. Maintaining edge consistency for Japanese and Western knife Product Size Single Item: Approx. 6.1 x 1.8 x 2.0 inches (155 x 45 Set Includes: 204 knife sharpener set, approx. 134 yen per set (tax included) JAN Code: ; Country of Origin: China Material: Body/Cover: Polystyrene, Whetstone Part: Ceramic (Grit Size #130), Bottom: EVA resin