This is a Yanagiba knife, marked "Sekimagoroku Ginju ST." As a Yanagiba knife, it's a bit small, so it could also work well as a large petty knife. Total length: 30.5 cm Blade length: 16.5 cm The cutting edge has not been sharpened. When sharpening, it is recommended to aim for the line of the blade's edge. Finished with natural whetstones. Thank you for viewing. Examples of whetstones used: PA120 grit, PA320 grit, GC220 grit, Diamond whetstone, C500 grit, King 1000 grit, WA1000 grit, Blade Black Curtain 2000 grit, Naniwa Kagaku Finishing 4000 grit, Otani Toishi Kitayama 8000 grit, Natural whetstone Gensho To, Natural whetstone Iyo Meito, Natural whetstone Okudo Please wash with detergent before use. Knives are prone to rust. After use, remove any dirt and wipe off moisture. Leaving dirt or moisture on the knife can cause rust. Instant purchase is welcome without comments. Please purchase only if you understand that this is a used item.