Carbon fiber liners reduce the weight of the Pentagon XR LTE by 35% when compared to the standard Pentagon XR. A folding knife designed for defense, the easy to carry SOG Pentagon XR features a 3.66" cryogenically heat-treated CTS XHP stainless steel, wide spear point blade and ultra-grip G10 handle. SOG's XR Lock enables smooth ambidextrous single-handed opening in three different ways with distinguishably solid blade-lock once open with fixed-blade-like feel and confidence.