Innovative blade Innovative blade lock-out that allows you to go from safe to blade open in one pull, with SOG*s Double-action Safety. With a textured aluminum handle and CRYO D2 blade, SOG-TAC AU is a fast-opening folding knife that springs to action with either hand, and stays open with exceptional lock-up strength thanks to SOG*s advanced AU-XR Lock. An American-made switchblade, it's a muscular go-to and back-up tool for military, first responders, and defensive carry users who will appreciate the reliable Double-action Safety.