This is a nakiri knife with the mark "Abe Saku." Marked as blue paper steel. Total length: 28 cm Blade length: 15.5 cm Finished with natural whetstones. Thank you for viewing. Example 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 Stone Kitayama #8000, Natural whetstone Gensho, Natural whetstone Iyo Meito, Natural whetstone Okudo Please wash with detergent before use. The knife is 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.