We designed these new Laser cut fully hardened stainless steel blades with corrosion resistance in mind. These new blades will take 140000 PSI as compared to 110000 PSI on older model blades. These blades will yield thousands of strikes and can be flipped over to reveal a fresh striking surface after prolonged use or can also be sharpened. These blades are great in tough environments and will not oxidize over time. All Aurora Fire Starters shipped after 04/14/08 are equipped with these now standard blades.Includes one extra stainless steel mounting screw. Made in USA!