Thank you for viewing. This is an offering for a Naganao-made Unagi knife, 180mm, single-edged, right-handed. Naganao was a prestigious knife maker formerly located in Sanjo City, Niigata Prefecture. The "Tokkyu" (Special Grade) designation indicates the highest grade, using Hitachi Metals Aogami (Blue Paper) steel. This is a rare and valuable item, as the company has been out of business for several decades and these knives are difficult to obtain. The handle is made of black buffalo horn with octagonal golden camphor wood. Specifications (approximate values) Blade length: Approximately 185mm Blade width: Approximately 37mm Blade thickness: Approximately 5mm Overall length: Approximately 325mm Weight: Approximately 185g