Shiro-ni-kou (White Steel No. 2) used Specialty All-Purpose Japanese Knife 180mm (6 sun) Walnut Hachikaku (Octagonal) Handle (walnut) Blade Length: Approximately 182mm Width at Base: Approximately 41.9mm Thickness at Base: Approximately 4.3mm Weight: Approximately 167 grams Single-edged blade Free Shipping No comment is needed when purchasing. As shown in the 14th image, there is a crack remaining at the border of the steel and iron, 1cm from the base of the handle. There is no problem with use.