STEEL: The Steel type on these blades is “L6” Tool Steel. L6 Tool Steel is a versatile, oil-hardening tool steel that is characterized by very good toughness and holds an edge well. Like other non-stainless steel L6 can rusts easily. Some consider this to be one of the best steels available for cutlery. It is also used frequently in saw blades, but With proper care and maintenance it will last a lifetime.