Hey, it's a lock back Key Knife for all of my knifely pursuits, such as opening my fan mail, defending myself against my neighbor's deceptively aggressive Havanese, and slicing through vacuum packs of PB2 Powdered Peanut Butter, otherwise known as the best alteration of nature by man since breast implants. Claiming to be the first of its kind with a lock back mechanism for securing the 1-1/2" stainless steel blade in its open position, the Key Knife fits unobtrusively on standard keychains and remains discreet until it's time to step up and cut.
Key Knife overall length is 4", and weight 0.7 ounces. Once the lock back mechanism is activated, the knife will not budge from its open position until the user employs a distinct closing action. A notch on the side makes opening handy as well.
The Key Knife comes with a lifetime warranty against defects in materials and workmanship. But, note to self, not defects in good judgment resulting in jackass maneuvers.