The Chisel Grind Dagger (CGD) is my latest non-permissive environment tool.  It is 3D printed from fiberglass reinforced filament and non-magnetic so it won't set off metal detectors.  It will not defeat X-ray or body scanners.  7-1/4" overall.  7-7/8" sheathed.  The printed sheath has a button that engages the back of the blade for solid retention.