I purchased this from the official website of the popular YouTuber "AlmazanKitchen." I bought it for a friend who loves to cook, but accidentally purchased two sets, so I'm selling one. I thought I would use it someday, and initially kept it with the intention of improving my cooking skills, but it's too advanced for me, so I'd love for someone who enjoys cooking to use it. It has a substantial weight and excellent sharpness. Made of stainless steel. You can cook anything, from vegetables to thick cuts of meat. Although it's unused, the box has some scratches due to home storage. Thank you for your understanding. Thickness: 2.8mm Blade length: 17.8cm