Exclusive chef knife Ryusen Hamono, collection Houenryu. Blade length is 24 cm. Coreless blade is made of VG10 and VG2 steels, 70 layers. Japanese white birch and resin handle. The Rockwell hardness on this knife is about 62 HRC. Ryusen Hamono Houenryu Gyuto knife goes in black gift box. Only handwash allowed.