Founded in 1976 by Sal and Gail Glesser, Spyderco initially focused on selling the Tri-Angle Sharpmaker™. In 1981, they revolutionized the knife industry with their first folding knife, the C01 Worker, featuring a round hole for one-handed opening and a clip for easy carry. Based in Golden, Colorado, Spyderco is known for its innovation and high-performance products.