Manufactured in Germany Special formula high carbon NO STAIN steel SIGMAFORGE knife is forged from a single piece of solid steel Icehardened FRIODUR blade starts sharper stays sharper longer and has superior resilience Precisionhoned blade and lasercontrolled edge ensures ideal cutting angle for sharpness and durability Ergonomic polypropylene handles permanently bonded for seamless accuracy and gaps 57 Rockwell Hardness excellent edge retention Edge angle 15 degrees per side