Features: Adopts durable zinc alloy and electroplating treatment, it is anti-rust, corrosion resistant and durable. Can be used for public toilet to indicate that the room is vacant or engaged. Red(engaged) and green(vacant) color is easy to recognize, so it is a universal indication. Easy to install, suitable for partition door and bulkhead door. Applicable to public toilets such as airport, station, hospital, shopping mall and office building. Specification: Condition: 100% Brand New Material: Zinc Alloy Color: Silver Size: Shown as Picture Weight: approx. 230g/8.11oz Package List: 1 * Indicator Door Lock Note: 1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.