This wooden hand-crafted Katsuobushi Grater Box,(Kezuriki) is a traditional tool for producing thinly shaved bonito flakes by hand. The sharp blade on top is made from SK-4 high-carbon steel. The drawer will catch all of the flavorful, umami filled shavings. Perfect for soups, stocks, Sushi, & Japanese cooking. This set includes a wooden mallet (Kizuchi) for adjusting the blade’s cutting depth. Box measures at 255mm long x 128mm tall x 110mm wide.