The Cangshan Cutlery 1023923 Thomas Keller Signature Collection Boning Knife is forged from Swedish Damasteel RWL34 powdered steel, an extraordinarily fine-grained, high-alloy steel known for its excellent edge strength, hardness and corrosion-resistance. The refined Thomas Keller Signature Collection by Cangshan is a model of precision and craftsmanship. Slim, sleek and exceptionally well-balanced, each knife is meticulously designed to elevate and augment the skills of the user. Chef Keller was instrumental in the design of this Chef's Knife, rigorously focusing on every detail to ensure it performs flawlessly. An ultra-precise 6-stage heat treatment creates a Rockwell hardness rating of 61 +/-2, allowing the blade to take a remarkably sharp edge.