This is a deba knife with the mark "Sakai Genkikuko Saiko." Total length: 31 cm Blade length: 16.5 cm 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 Mark 2000 grit, Naniwa Kagaku Finishing 4000 grit, Otani Toshi Kita-yama 8000 grit, Natural whetstone Gensho-to, Natural whetstone Iyo-me-to, Natural whetstone Okudo Please wash with detergent before use. Knives are prone to rust. After use, remove 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.