To many savvy knife users, the Endura 4 is the perfect everyday carry cutting tool. Enhancing it with a Wharncliffe-style blade redefines that perfection and supercharging it with K390 MICROCLEAN blade steel raises the bar even further. Specially developed to provide the extreme wear resistance and strength needed in the most demanding industrial applications, K390 is a state-of-the-art tool steel. The full-flatground Wharncliffe blade of this knife takes full advantage of these properties to deliver exceptional cutting performance, edge retention, and toughness. Whether you need scalpel-like precision or sheer cutting power, its perfectly straight edge is up to the task. All other features of this knife are consistent with the time-tested Endura 4 Lightweight, including a high-strength back lock mechanism, skeletonized stainless steel liners, a four-position pocket clip, and a lightweight fiberglass-reinforced-nylon (FRN) handle molded in the signature blue color of Spyderco’s elite K390 family
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