This is a Masahana Hamokiri (bone-cutting) knife. The blade length is approximately 21.5cm. It is single-edged. The steel is unknown. The handle is white water buffalo horn. This is a Masahana Hamokiri (bone-cutting) knife. Even for a Hamokiri knife, I think it has a beautiful shape, tapering towards the tip. It has a good length, and the blade is thin, so I think it's easy to use for both bone-cutting and filleting. I repaired the rust and scratches, but some fine scratch marks remain after mirror polishing. I recommend it if you don't mind. Both the cutting edge and the flat surface are almost mirror-finished. I have sharpened and polished it, so I think it can be used for a long time. Recommended for professionals and general households alike. It has been finished with a Kitayama 8000 grit stone, a Shapton 12000 grit stone, and a natural whetstone. It is in a very sharp condition, so it can be used immediately. ● Size: Blade length approx. 215mm ● Blade thickness: Approx. 4.1mm at the thickest part of the base of the blade ● Overall length: 380mm ● Weight: 189g #Knife #Masahana #Hamokiri #21.5cm