A Colorado-based knife manufacturer world renowned for innovative, high-quality folding cutlery. Their patented round hole in the blade (yes, they patented the circle) makes for extremely rapid opening. Know a Spyderco by the distinctive angular blade and satisfying clack of the blade lock. Spyderco knives are made with extremely high-quality steel, and are generally designed for durability and strength. They are favored among police, medical, and marine personnel, as well as hunters, hobbyists, and knife enthusiasts.