Finding yourself a rugged but lightweight combat/utility knife? Well, be sure to check out the SureFire Knives Delta Folder. It offers superb fighting capability thanks to its Crucible CPM S30V steel blade, and features a brutally tough 1.8-inch-thick titanium frame lock which provides structural strength and durability. Not to mention, the frame also incorporates a number of practical tools including screwdriver, wire cutter/crimper, parachute cord/seatbelt cutter, wrench, window breaker and self-seating wrench slot for smaller nuts. $425.