MAC knives are precision tools that are shaped, assembled, polished, and sharpened by professional Japanese craftsmen. Unlike some of our competitors, every step in our knifemaking process is performed in Japan using Japanese products. Each knife is equipped with a razor-sharp edge, comfortable handles, and great balance. Popular with professional cooks and cooking enthusiasts throughout the world, and over 25 million knives sold since 1964. MAC blades are made from rust-resistant Molybdenum High-Carbon cutlery steel. Blades are hand-ground, and hand-sharpened on water-cooled stones to optimize the quality of the finished blade. The thin razor-sharp blades are sharper and stay sharp longer than other leading knife brands. The steel has optimal hardness between 57º and 61º Rockwell C and is still easy to re-sharpen.