exclusive 420j2 stainless steel blades with Molybdenum and Vanadium are forged at extreme temperatures, and then tempered cryogenically in liquid oxygen to a Rockwell hardness of 56-58. This exclusive process produces a blade that will stay razor sharp for a lifetime, and we guaranty it will not rust, stain, pit, chip or corrode. Ergonomically designed handles are made of layered Mahogany, impregnated with resins, and pressed together under extreme heat and pressure to create what Mother Nature takes millions of years to do in petrified “rock like” wood handles. Each knife is carefully weighted to ensure balanced perfection. Arrowhead knives have been a favorite of enthusiastic home cooks and chefs for more than 40 years, and we guaranty Arrowhead for a lifetime with our 50 year unconditional lifetime guaranty.