We designed these new Super Alloy (Optional) Blades for Aurora Fire Starters that are shipped to US Soldiers and for customers that want the absolute best that money can buy. These new blades are constructed using state of the art materials. These new blades must be cured in special ovens during manufacturing and can only be cut using a diamond blade. These Super Alloy Blades will NEVER DULL or need to be sharpened! We have completed testing on these new blades and they are great! An Aurora Fire Starter equipped with this blade is unbeatable! Includes one extra stainless steel mounting screw. Made in USA!