Kotobuki knives are made in Japan where knives are made for a specific use and purpose with a unique shape. These knives have a high quality stainless blade that keeps it's edge and is easy to clean. Usuba, recognizable by its square blade it is for peeling, slicing, and dicing vegetables. The thin double-edged blade allows for straighter slices and helps to keep vegetables from breaking during food preparation and garnishing. Blade length: 6-1/2-inch Hand wash with a mild detergent and wipe dry. Sharpen with a whetstone.