DEPENDABLE, DURABLE, VERSATILE: Wherever you need security, this knob handle adapts to your needs on any door. It lends itself to interior locking doors where you want the security of a key lock LEFT? RIGHT? EITHER? YES: Never worry about installing these knobs upside down on a door that swings right when you needed left! Reduce confusion and installation costs CLASSIC, EVEN ELEGANT, SECURITY: Add a touch of quiet class to your environment. No protruding flanges, screws or rough edges ensures completely safe operation and easy handling QUALITY IS BUILT IN: The solid brass, 6-pin cylinder, smooth finish, polished appearance and substantial, easy-to-grasp knob will subtly elevate and enhance offices, schools, commercial premises everywhere LOCK ONE SIDE, OPEN THE OTHER: Use it for any door that can regularly use key secure locking along with easy egress labs, offices, classrooms, Lawrence understands and meets your needs