The Spyderco Endura 4 Folding Knife is distinguished by its skeletonized stainless-steel liners and injection-molded fiberglass-reinforced-nylon (FRN) handles. Its slim, highly refined blade grind offers incredible edge geometry and a distal taper that reduce friction for optimal cutting performance. A sturdy back lock mechanism housed in the handle locks the blade securely open when in use yet allows easy ambidextrous lock release. FeaturesCold work, tool steel bladeAmbidextrous clip position