Spyderco C122PBK Tenacious Lightweight FRN Folding Knife Satin Plain Edge. This Lightweight knife The Tenacious Lightweight has reduced weight by nearly 10% with black FRN handle scales and full skeletonized stainless steel liners. The 8Cr13Mov stainless blade is leaf-shaped and ground flat from spine to cutting edge. This model has a plain cutting edge. The blade’s shape has an oversized Spyderco Round Hole and textured spine jimping allow you to open the blade and position your thumb on the spine in slip-proof ready for work. The Walker Linerlock (with jimped liner) and 4-way pocket clip lets you carry, Tip-up/tip-down left-hand/right-hand.