Purchased just recently (July 2025) and only water-washed, so it's unused. When water-washed, some water marks and black stains appeared on the blade tip and the back of the blade, as shown in images 2 and 3. *Box has some tears (see image 4) The Yanagi Sori designed kitchen knife features a handle designed for ease of use, with a shape and weight balance that has been experimentally verified for each size to reduce fatigue even after long hours of use. The material is stainless steel for cutlery, which combines sharpness, resistance to breakage, and rust resistance. Skilled craftsmen carefully sharpen each blade, and the handle has a blasted finish that prevents slipping even with wet hands. The material is 18-8 stainless steel. It is rust-resistant and easy to care for. Dishwashers can be used for high-temperature, high-pressure (up to 180 degrees) washing, and of course, re-sharpening is possible. Product Description Name: Yanagi Sori Design Kitchen Knife 18cm Contents/Size: <Kitchen Knife 18cm> Blade Length: 18cm Material: Blade/Cutlery stainless steel three-layer steel Handle/Stainless steel (chromium 18%, nickel 8%) Total Length: 305mm Weight: 165g *There may be some variation in the numbers. Made in: Tsubame City, Niigata Prefecture [Retail Price] ¥11,000- Yanagi Sori Design Kitchen Knife 18cm [Yanagi Sori Kitchen Knife Dishwasher Safe Stainless Steel Cooking Kitchen Knife Santoku Knife All-Purpose Knife Free Shipping Gift Present All Stainless Steel Niigata Prefecture Tsubame City Tsubame Sanjo]