Material and durability - Made from commercial grade aluminium alloy. They are antioxidative, anticorrosive, anti-rust, sturdy, abrasion resistant and weatherproof. Compatibility and versatility - Extremely versatile and suitable for medium doors. Can be operated on metal doors, fire doors, wood doors, glass doors with frames, and various interior or exterior doors, including office and home doors. Safety and security - Helps keep your front door closed automatically to deter unauthorized entry. Particularly beneficial for properties with many people coming and going, providing peace of mind. Performance and operation - Reduces noise when closing the door and closes it slowly to minimize damage from impact. Prevents forgetting to close the door. Features adjustable self-closing capability, making it suitable for home, office and hotel room doors. Use scenarios - Busy office or commercial entrance: ensures doors close automatically after use, reducing drafts and improving security in high-traffic areas. - Residential home with children or pets: limits loud slams and protects doors and frames while maintaining climate control. - Hotel rooms or shared living spaces: smooth, controlled door closing improves guest experience and privacy while reducing wear.