[Enhanced Door Security]: 3" Stop metal construction home security door lock with 4 screws designed to withstand 800Ibs of force, 12 times stronger than a making it incredibly difficult for intruders to break in. We equipped each door lock latch with 8 screws, including 4 long and 4 short, which you can choose according to your needs. Door lock makes you feel safe during the day or at night, enabling more relaxed rest. Husfunov door lock is an ideal choice for enhancing your home security. [Easy to Install]:With a power screwdriver and drill, you can install the door safety lock on the door frame within 5 minutes and you will reap the safety of the whole family. The metal reinforcement door lock comes with an installation manual for your reference during the installation process. All long and short screws included in the package now fit the locking holes in the mounting plate to meet many customer requirements. [Easy to Use]: Place index finger on top of door lock security and thumb on bottom and slide lock away from the base plate along with the door in the direction of the hinges then pull outward. No tools are required to open, just a little practice. This door guard prevents breaking in but is easy to open in case of emergency. You will much more confident in your doors being able to sustain any sort of forced entry. [Home Security and Childproofing]:Reinforcement lock for front door features a child safety protection function. Door security lock unique spring-loaded design prevents children from opening the door to strangers.Flip-lock door lock protects your children from potential hazards when you're not home. And for the elderly or women living alone at home, door lock reinforcement also provides an additional sense of security, making people more at ease. [Suitable for Most Types of Doors]: Whether you are a tenant or a landlord, you need to consider the safety of your property and family. Security door lock can meet your needs. Husfunov door lock is suitable for any inward-opening apartment door, bedroom door, front door, back door, patio door and courtyard door. Please note: security door lock is not suitable for french double doors, garage doors, doors with gaps less than 0.07", outward opening doors, or doors with misaligned frames. Product description