All Endura 4 Lightweights are distinguished by their skeletonized stainless steel liners and injection-molded fiberglass-reinforced-nylon (FRN) handles. 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 handle ensures a secure, non-slip grip and a four-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.