Masashi Koi Gyuto 240mm

About the Shape - Inspired by the profile of a traditional European chef knife, Gyutos are a multi purpose knife with a slight meat cutting bias. “Gyuto” translates to “cow sword.” If you want one knife to do it all, This is it. Starting at 180mm, Gyutos can reach the ridiculously long (and awesome) 370mm. For the at-home or professional cook, we recommend a Gyuto which measures between 210mm and 270mm long.

About Masashi Koi -Masashi-san makes a beautifully polished and crazy sharp blade, working entirely by himself hand-forging, sharpening, and putting on the handles. He’s also a bit of a risk taker, forging knives in his flip-flops and lighting cigarettes off white-hot knife steel. Bad. Ass. The hammer-finished Koi series is named for the koi fish, which inspired the pattern on this knife. Semi stainless VS1 steel allows this knife to cut like carbon steel and slowly develop a patina, but not rust as quickly as carbon steel. These are perfect for young chefs and home cooks alike!


Knife Shape Gyuto
Blade Length 240mm
Blade Height 55m
Weight 214g
Spine Thickness at Heel 3mm
Steel Type VS1 Semi-Stainless Steel
Rockwell Hardness 60-62
Edge/Bevel Double (50/50)
Handle Wa (Japanese) Handle, Chestnut wood handle with black pakka wood collar
Blacksmith Masashi Yamamoto
Knife Line Masashi Koi
outside mm
inside mm