Material: The commercial privacy indicator door lock is made of stainless steel, sturdy and wear resistant, ensuring a long service lifeVersatile Use: Multifunctional stainless steel indicator door lock is designed for public restrooms, bathrooms, toiletsEasy Installation: This door lock comes with installation accessories, easy to install, no need for professionals to complete the installationFeatures: Keyless restroom door lock dead bolt lock with red/green occupancy indicator signs, making it easy for others to know whether restroom is occupiedWide Application: WC restroom inside occupancy indicator dead bolt, ideal for use in public restrooms, professional building, school, restaurant, gym, hotel, rv, motorhome, airports, stations, malls, and office restrooms, showers, bathrooms, gym Specification: Material: Stainless Steel Size Chart: Diameter: 6.9cm/2.72inch Package Includes: 1 Pack Set Indicator Privacy Door Lock with Hardwares Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.