HIGH SECURITYThis locking filing cabinet for home office use comes with one lock and 2 keys to keep all your documents secure. You can lock every drawer simultaneously, thanks to an anti-tilting mechanism. When one drawer of this narrow file cabinet is opened, the interlocking system stops the other drawer from opening. SMOOTH DRAWERThis 2-drawer locking file cabinet has been upgraded. Issues such as drawer stiffness, improper closing, and misalignment have been resolved, allowing the drawer of this black file cabinet to glide smoothly on its slides. It provides smooth pulling and softer edges, and will not tip over unexpectedly when the vertical 2-drawer file cabinet is fully extended