Messermeister Park Plaza Stiff Boning Knife, 6-Inch The German 1.4116 high-carbon, stainless alloy blade resists stains and corrosion, exhibits toughness and durability, holds its edge retention, and is easy to re-sharpen to a razor-like edge. This knife line is one-piece stamped, which produces a thin and lightweight blade. They are heat treated and cooled to achieve a Rockwell of 57-58. The 20 edge on this blade is efficient and resilient. The knives are outfitted with the finest industrial strength thermoplastic polyoxymethylene (POM) handle. Handcrafted in the historic cutlery capital of Solingen, Germany. The Knife for Life guarantee provides a lifetime warranty against material and manufacturing defects.