Material: Alloy Size: 10.5*6.2cm / 4.09"*2.42" Color: Silvery, black, golden, antique red, bronze 1. Innovative Design: The alloy safety door lock features advanced alloy material and innovative design, ensuring safety and durability. The face is polished to prevent rust and oxidation, extending the lifespan of the lock. 2. High Security: This rotating door lock is a safety locking device for swing doors, allowing the door to be slightly opened for safe viewing and ventilation. 3. Easy Installation: The safety door lock is designed for easy installation, and comes with screws for self-installation, saving time and effort. 4. Child Safety Lock: These swing door locks can also be installed in places out of reach of children, preventing them from opening the door on their own and providing additional safety for children. 5. Home Security: This home security door lock can be easily unlocked from the inside with a simple swinging motion, but it is too strong to be forcibly opened from the outside. Package includes: 1* safety lock