Lansky Roadie 8-in-1 Keychain Knife Sharpener - Restore a Razor Edge in Minutes 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 you&';re ready to hit the open road or the dusty trail. Material: Carbide