Al Mar Ultra Chef Gyuto Knife 9 1/2" blade Modern in design and state-of-the-art in performance One piece ergonomic, hollow, all stainless steel handle Each blade is 33 layers of stainless steel with the center cutting layer made of VG-10 Cobalt stainless steel which is heat treated to a Rockwell C-scale hardness of 60-62 Strong and light in weight, each knife is hand sharpened to an incredible edge