HIGH QUALITY- This automatic door closer is made of commercial grade aluminum alloy, hydraulically operated, fully automatic closing, adjustable speed, giving you an easy and safe life, protecting your doors and locks. SAFETY- Door closers can help ensure the safety of you and your loved ones. This door closing device will cause your front door to close automatically to prevent thieves from entering. This spring door closer may help give you peace of mind, especially if you have a lot of people coming in and out of your property. Silent Door Closer-The spring door closer can reduce noise interference when closing the door, close the door slowly to reduce damage to the door caused by violent impacts, and prevent you from forgetting to close the door. Applicable Door Type-Our interior door closer is suitable for metal doors, fire doors, wooden doors, civil doors and commercial doors, almost all doors less than 10kg. Adjustable self-closing doors are ideal as doors for homes, offices, and hotel rooms. Easy to Install- This door spring closer comes with all screws and fixtures required for the application. The automatic door closer also comes with installation instructions to ensure the hydraulic door closer is installed on your door easily and efficiently.