The Great Neck® Quick Change Lock Back® Utility Knife combines the best features of a lock back knife and a utility knife. It opens easily with one hand so you can quickly cut through obstacles such as paper, cardboard and more! This unique Lock Back Utility Knife also features a quick-change mechanism for fast and efficient blade replacement. With its compact and lightweight aluminum handle, it can be easily stored or hung by a convenient pocket clip. You're set to cut through boxes, carpet, string and more with "ultimate" ease. Knife Type: Utility; Blade Type: Razor; Blade Material: Steel; Number of Blades: 1.