- Effortless Installation: This door lock is designed for easy installation and operation. It cannot be unlocked from the outside, ensuring maximum security, while providing straightforward access from the inside. - Durable Build: Featuring a thickened base with multiple positioning holes ensures a secure and firm installation. The countersunk head screw hole design not only adds stability but also enhances the aesthetic appeal. - High-Strength Security: Equipped with a bold, solid chain that is resistant to breaking, this lock offers high strength and anti-fracture properties, giving you confidence in its durability and reliability. - Versatile Compatibility: Ideal for various settings, this lock is suitable for hotel doors, indoor doors, courtyard doors, and other wooden doors, making it a versatile choice for any entry point. - Premium Material: Made from stainless steel, this lock is moistureproof and anticorrosive. Its tough, sturdy construction means it withstands wear and tear over time. - Enhanced Safety: Provides added security for residential homes and apartment doors, protecting your loved ones and belongings. Specific Use Scenarios: 1. Install on the main entry door of a hotel for guest security, ensuring no unauthorized access. 2. Use for indoor doors to secure private rooms or sensitive areas within a home or office. 3. Perfect for courtyard doors, adding an extra layer of protection while remaining accessible from inside.