This is a Ko-deba knife made by Yoshihito in Tokyo. Total length: 22 cm Blade length: 10 cm Water buffalo horn handle Thank you for viewing. Examples of whetstones used: PA #120, PA #320, GC #220, Diamond whetstone, C #500, King #1000, WA #1000, Shapton Kuromaku #2000, Naniwa Chemical Finishing #4000, Otani Toishi Kitayama #8000, Natural whetstone Gensho-to, Natural whetstone Iyo Meito 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.