This Konosuke Wa-Gyuto is made with Fujiyama White #2 steel and measures about 200mm on the blade edge. The handle is made of ebony with blond buffalo horn ferrule. The spine is rounded and this knife is very thin and light. This steel is excellent quality and one of Kosuke's favorites because it's hard (RC61+-) and takes a great edge and is relatively easy to sharpen..
This is a beautiful knife that feels great in the hand. Fit and finish are great. The spine and choil are nicely rounded. Very sharp with great cutting ability out of the box. It’s developing a nice patina.
Couple of notes: It seems somewhat reactive (discolors garlic and onion a bit). And I wouldn’t call this knife thin or light. It has some heft to it and is not as thin as many of the lasers out there.
In response to the LA,CA review: The reason it discolors somewhat is that it is a carbon steel. The reason it has heft (not light/thin) is it a Fujiyama; which are thicker/heavier. If You want a thin laser type that is very stain resistant,then chose a Konosuke HD (or HD2). I prefer carbons & heft but love the HD steel for thin laser low maintenance. Both are great knives but You have to know what YOU WANT in a knife.