This is an Aritsugu gyuto (Japanese chef's knife). The blade length is approximately 20.5cm. The steel type is unknown. The handle is a white buffalo horn octagonal handle. The markings are on the top. The single-edged blade was ground on the back to make it slightly double-edged, so I sharpened only the front to reshape it. It's now approximately an 8:2 double-edged blade. It cuts well enough, so when sharpening in the future, please sharpen it as if it were a single-edged blade. I repaired the rust (pitting) and scratches, but some fine imperfections are still visible even after mirror polishing. I recommend it if you don't mind. Both the flat and the cutting edge are almost mirror-polished and beautiful. The octagonal handle has also been polished beautifully and is gleaming. Overall, it has the dignified air you'd expect from Aritsugu. It's generally clean, and the size is easy to use, so I recommend it for both professionals and general users. The knife has been finished with a Kitayama 8000 grit stone, a Shapton 12000 grit stone, and a natural whetstone. It's in a very sharp condition and ready to use immediately. ● Size: Blade length approx. 205mm ● Blade thickness: Approx. 3.4mm at the thickest part of the base of the blade ● Overall length: 350mm ● Weight: 144g #Knife #Gyuto #Aritsugu #20.5cm