Features: The green and red color is bright and easy to recognize, easy to install, suitable for partition door. The surface of the lock adopts specially brushed treatment, anti-oxidation and ensures long service life. Red and green color will indicate whether it is occupied, red means it is engaged and green means vacant. Widely used in public toilet and restroom in airport, station, hospital, office building and other public places. Made of zinc alloy and stainless steel material, this indicator door lock is sturdy and durable for long time use. The center of the lock has a crisp sound when it is rotated. It has a 90-degree positioning, a 360-degree rotation. Suitable for clamping the plate in thickness of 12-18mm. Specification: Condition: New Item Type: Indicator Door Lock Material: Cast 304 Lock Head + Zinc Alloy + Stainless Steel Product Size: Approx. 110 x 52 mm / 4.3 x 2.1 in Diameter: Approx. 54mm / 2.1in Hole Distance: Approx. 36mm / 1.4in Weight: Approx. 240g / 8.5 oz Package List: 1 x Set 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.