Product Description: One-piece precision forged construction Sigmaforge?? for perfect geometry, improved stability of the blade and steel structure. Laser controlled edge for longer lasting sharpness and more consistent blade angle. Friodur?? Ice Hardened for maximum no stain properties and blade strength. Super Bolster is design for ideal weight, balance and safety. Full Visible Tang for proper balance and great strength, high carbon no stain steel (exclusive JA Henckels formula) non-staining non-rusting.