Spyderco Persistence Lightweight Black 2.75" 8Cr13MoV FRN Folding Knife C136PBBK Extrema Ratio ECM combines the

Extrema Ratio ECM combines the features of a useful tool to the ones of a reliable blade

Even the best conventional blade pivot bearings have some degree of friction which resists initial movement

This SpyderEdge version has a red handle

Originally developed to replace the M3 Grant/Lee medium tank

Spyderco Persistence Lightweight Black 2.75" 8Cr13MoV FRN Folding Knife C136PBBK Extrema Ratio ECM combines theTruth be told, one size rarely fits all. For those who want all the qualities and budget friendly advantages of our iconic Tenacious model in a slightly smaller package, the Persistence is the perfect answer. The Persistence Lightweight raises the bar even further, adding the benefit of handle scales injection molded from tough fiberglass reinforced nylon (FRN). The molded scales reduce its weight by almost 10 percent compared to its G 10 handled