This extremely flexible fillet knife is the thinnest knife we make. With an average thickness of less than 1.0mm, this blade can be flexed to nearly a 90-degree angle. Perfect for filleting delicate flatfish such as sole and flounder. Because of the narrow profile and extremely thin blade, this knife is also great for slicing bite-size pieces of sashimi from a ready-to-cut section of sashimi-grade fish.