In the 1980's, the original Spyderco Endura blazed a trail as one of the first lightweight clip-carry folding knives. Today it remains one of our most popular models and continues to set the standard for all other knives of its breed. Now in its fourth generation, it has also inspired a broad range of variations to meet virtually every user's needs and preferences. All Endura 4 Lightweights are distinguished by their skeletonized stainless steel liners and injection-molded fiberglass-reinforced-nylon (FRN) handles. The flagship version of the design includes a stout saber-ground VG-10 stainless steel blade with a choice of PlainEdge, CombinationEdge, or SpyderEdge configurations. Its blade is supported by a sturdy back lock mechanism that locks it securely open when in use yet allows easy ambidextrous lock release. A Bi-Directional Texturing pattern on the black handle ensures a secure, non-slip grip and a 4-position hourglass pocket clip supports left or right-side tip-up or tip-down carry. Lightweight, extremely capable, and completely ambidextrous, the Endura 4 lightweight is still the standard by which all others are judged.