Zwilling Pro is designed with a curved bolster. It allows the chef to hold the knife with precsion, safety and comfort. The wider blade optimizes cutting surface and minimizes wrist stress. The curved front optimizes the blade for western style rocking cuts. The nearly straight back allows for Asian chopping motions. Constructed of high carbon steel with a Rockwell hardness (HRC)of 57. Cutting edge is honed to a sharp 15 degrees on each side.