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. SOGs 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. The next level of enhanced pocket knife capability backed by Pentagons proven pedigree. See all Pentagon XR here. Part 12-61-02-57 Upon laying hands on the new Pentagon XR, the first thing from our mouth was, damn. The ergos, lock up, heft and smooth pivot operation put the Pentagon XR solidly above the brands previous station in the knife world. SOG's new XR locking system is strong enough to hold a Toyota, and its spear point blade is wide, sturdy, and tipped with a slight back edge that makes delicate work possible. - Recoil Magazine, July 2020. BUILT FOR PROFESSIONALS The MK3 design leverages feedback from users and aims to improve on all features that are relied on in professional use case situations, with a focus on defensive and combat use. MADE FOR PERFORMANCE Includes improved operation of the blade opening, fully ambidextrous operation and configuration of all features, improved blade design, greater hand comfort and upgraded materials.