The imarku 4-piece steak knife has excellent craftsmanship, cutting-edge technology and high-quality materials. For these steak knives, we have carefully selected the steel of each knife and are made of German high-grade stainless steel X5CrMoV15 to achieve extremely high blade sharpness and durability. The Rockwell hardness of these steak knives is 56 through the heat treatment process, which perfectly combines edge retention and service life.