Some guys carry crystals to protect themselves from harm. But why settle for pebbles when you could have high-grade steel? This compact utility knife has an ultrasharp blade that flips open and locks into place. Whether you're facing imminent danger or the perils of stubborn packaging this is your knife in shining armor.

HOW TO USE

This small but powerful blade is made for many uses: carving, skinning, sharpening, or even cutting away those itchy collar tags. To open, simply draw the blade out by tugging the hole with two fingers, until a second click ensures that it's locked in place.

Practice until you have it down to one menacingly smooth motion.