The type of steel is only one aspect of knife construction, how the material is tempered as well as the design of the knife itself can have a huge impact as to its characteristics. Extrema Ratio works closely with elite special forces and law enforcement teams, to make knives that their team members can trust their lives upon to work in the most extreme circumstances. All of their knives are backed with a lifetime warranty and we haven't had a single warranty claim in the 6+ years we've been the exclusive importers and distributors to Canada.