Crafted by hand, these knives are made from X50CrMoV15 German Steel, ensuring durability, stain resistance, and exceptional edge retention. The blades undergo a seven-stage heat treatment process to maintain strength and function, with an HRC of 58 +/- 2 on the Rockwell Hardness Scale. The set includes eight 5" serrated steak knives and a solid Acacia block. The 5" handle and 5" blade make for effortless slicing of grilled meats, from filet mignon to thick chops. NSF International Certified and backed by a lifetime warranty, these knives should be washed with warm water and detergent, then carefully dried.