Material: zinc alloy.Use: They can be widely used in airports, stations, hospitals, offices, restaurants, shopping malls, offices and other public restrooms.Easy to install: The latch can be mounted directly on the cabin or recessed panel door, easy to install and convenient to use. Empty (green) / Engaged (red).Pretty design: no more awkward knocking to see if there is someone in the toilet. This empty (green) / engaged (red) indicator directly indicates whether the room is occupied.Instructions:1. Made of high quality zinc alloy, beautiful appearance, corrosion resistant, attractive and durable, not easy to fade or rust.2. Surface mount with bolt fixing and can be mounted directly on the cabin or recessed panel door.3. Scope of delivery: 1 x turn signal lock (with screw).Note:1. Manual measurement, there may be some errors, please understand.2. The color of the actual item may vary from the pictures, depending on your computer's display and brightness settings.