First introduced in 1990, the Spyderco Endura was one of the first lightweight, high-performance, one-hand-open pocketknives ever developed. A consistent best seller, it has evolved steadily over the years through Spyderco"s CQI (Constant Quality Improvement) process. The stainless steel-handled Endura 4 takes the proven Endura design and renders it with solid stainless steel handles for extreme strength and increased heft for users who prefer a more substantial knife. A four-position pocket clip supports left or right-side tip-up or tip-down carry. Its VG-10 blade is flat saber-ground with a stronger tip and larger 13mm opening hole. Phosphor bronze washers ensure a smooth action, and textured jimping on the spine guarantees positive control during use.