This knife sharpener contains more useful features per square inch than any other sharpener in the world. Featuring a carbide knife sharpener. two screwdrivers (one flat head. one phillips head). a variable hex wrench. a bottle opener. a pry tool. and a line cutter. The ultimate in portability and versatility: just clip the carabiner on your keychain or pack and youre ready to hit the open road or the dusty trail.