Yoshihiro High Speed Stainless Steel Nakiri/Usuba Vegetable Chef's Knife Ebony Handle (6.5'' (165mm)) HAP40 High Powdered Stainless Steel keep their sharpness longer than most traditional stainless steel knives (HRC 64-65). HAP40( Funmatsu Haisu) is a extremely hard blade and is highly stainless. Complimented with a traditional Japanese style octagonal Ebony wood handle for a durable yet balanced and comfortable grip. Hand wash with mild cleanser; Handmade by skilled tradesmen in Japan.