The security door lock guards your home safe and keeps you peace of mind. Add an extra door lock defender for your home and prevent unauthorized entry. Upgrade Protection Design - Made of all-aluminum alloy, the sturdy home security door lock can withstand 800 lbs of force, 12 times stronger than a ordinary deadbolt against being kicked in. It can prevent the door from being kicked in and forced into the house, ensure any door cannot be opened from the outside, and escort your home. Easy to Install - Each door reinforcement lock is equipped with a total of 8 screws including 4 long and 4 short ones, select the appropriate screws, and use an electric drill to install them within 5 minutes. Easily add an extra lock to your door, and match any inward swinging door. Home Security Protection - Use this high-security door reinforcement lock for additional home security on any swing-in door of any thickness. It helps to ensure any door cannot be opened from the outside. It is suitable for front doors, door inside, bedroom doors, side and garage doors, and basement doors. Tamper-Resistant - The spring-loaded design can be installed at a higher level, to ensure it is child-safe. Plus, while locked, this tamper-resistant door latch protects against the door being kicked in, lock picking, and bumping and it is designed for women living alone, the elderly. Unlock in One Second - Groove design for easy opening of the door safety locks from the inside, especially in an emergency. Unlocking and locking can be completed within a second with a little contact. No tools are required to open it, just a little practice. The most convenient and fast door security device.