The Persian saber is the stuff of legends and has been treasured by warriors and princes since ancient times. The Victorinox Pioneer X Damast has utilized the famous Damast steel blade making it the toughest Swiss knife there is. The upgraded blade has 150 layers of steel and is formed by repeated heating, mechanical layering, and the mixing of different steel powders. The chemical mixture and treatment of the steel creates what are called carbon nonotubes that run like fine threads through the blade. They give it hardness and flexibility, along with a self-sharpening like ability.