Shimomura-kogyo Tsunouma Gyutou Chef Knife 210mm (TU-9004) Length: 335mm / Length of a blade: 210mm / Thickness: 2.0mm Blade material: stainless steel superalloy / molybdenum-vanadium steel Cutting edge hardness: HRC57 plus or minus 2 Pattern charge: stop tack and tack back three percent this through, strengthening black wood flat pattern, this one with ferrule