SOG Pentagon OTF 3.79 inch Automatic Knife - FDE - The American made Pentagon OTF automatic knife is designed to meet the exacting demands of users who require a dependable one-handed, fast opening switchblade knife. SOG's Dynamic Lock-up System redefines open reliability and blade lock-up strength in OTF knives, while the CRYO S35VN blade and hard-anodized aluminum handle reinforce the durability of the knife. Pentagon OTF delivers reliable OTF technology for professional users who rely on high-end steel and technology. Features CRYO CPM S35VN STEEL SOG Dynamic Locking System Large "Go Button"