The SOG Specialty Knives & Tools Key Knife is one of the most inconspicuous folding knives on the market and the first lockback of its kind. This key chain folding blade is designed with a handle the shape and size of a standard house key. Made of stainless steel with a brass finish, this key holds a 1.5-inch folding steel straight blade with satin finish that’s discreetly hidden until you need it. The lockback mechanism keeps the stainless steel blade in its open position and can only be unlocked by a distinct action to prevent accidental closure while in use. Great little EDC knife for less than 10 bucks!