Shiro-ni-kou (White Steel) used Specialty All-Purpose Japanese Knife 180mm (6 sun) Walnut Hachikaku (Octagonal) Handle (walnut) Blade length: Approximately 183mm Base width: Approximately 37.3mm Base thickness: Approximately 3.1mm Weight: Approximately 137 grams Single-edged blade Free shipping No comment is needed when purchasing.