1.[Upgraded Security Design]: 3' stop metal structure home security door lock, equipped with 4 screws, can withstand 800Ibs of force, 12 times stronger than ordinary door latches, and can prevent being kicked open. We have equipped each door latch with 8 screws, including 4 long screws and 4 short screws, you can choose according to your needs. The door lock guards your home. This reinforced lock is a good choice for home security. It is also a perfect gift for your family. 2.[Easy to install]: Use an electric screwdriver and drill to install the security door lock on the door frame, and complete the DIY installation of this door lock reinforcement in less than 5 minutes, and you will be favored by the whole family. Easily match any inward opening door. The door lock guards your home security as a door guard. 3.[]: Place your index finger on the top of the door lock security device and your thumb on the bottom, slide the lock away from the bottom plate in the direction of the hinge, and pull outward. No tools are required to open, just a little practice. This door guard prevents break-ins, but is easy to open in an emergency. You will have more confidence that your door can withstand any form of forced entry. 4. [Home Safety and Protection]: The protective door lock adds an extra measure of safety for your young children when you are away from home. This door reinforcement lock is designed with a spring to prevent the door from being opened for strangers. This door interior lock can provide protection for your boys and girls when you are not at home, and can also make the elderly or ladies feel safe when they are alone at home.