The Pentagon OTF is designed to meet the exacting demands of users who require a dependable one-handed, fast-opening knife. SOG's Dynamic Lock-up System redefines opening reliability and blade lock-up strength in OTF knives, while the CPM-S35VN blade and the hard-anodized aluminum handle reinforce the durability of the knife. The Pentagon OTF delivers a reliable OTF for professional users who rely on high end steel and technology