Kikuichi Carbon Steel Series Hankotsu: 5.9-in.

SK-4 Carbon Steel. Carbon steel is the workhorse of the knife industry, in use for nearly a millennia it holds a super sharp edge and is easy to sharpen at home. This is the preferred blade material of professional chefs the world over. It’s light, easy to sharpen and takes a very keen edge due to the fine grain structure of the steel.