A whetstone must be perfectly flat and level to sharpen your knives efficiently. Regular use of a flattening stone will keep your whetstone in good order and ready for sharpening.FeaturesSize: L 169 x W 55 x H 30 mmDesigned to keep your whetstone properly flatMade in JapanRead through ourShun Blog postto find out more information about this top-end brand, how to sharpen their knives with a honing steel and whetstone and the differences between their ranges. See all Chefs ComplementsKai Shun Knives here.To find out the best knife to use for your next task, how to sharpen and care for it, and why your knife is produced is important, check ourBest Knife Guide Online blog post.