Home Security, Sturdy Door Reinforcement Lock: 3inch Stop metal home security door lock with 8 screws, including 4 long and 4 short, so you can choose according to your needs. The door latch lock can withstand a force of 800 lbs, which is 12 times stronger than a normal deadbolt, providing effective protection against forced entry. Front door lock makes you feel safe during the day or at night, enabling more relaxed rest. Easy to Install, Easy to Use: With a power screwdriver and drill, you can install the door safety lock on the door frame within 5 minutes. When the door is locked, reach out and press the upper and lower grooves of the reinforced door lock and pull horizontally to the fully unlocked state to unlock. This ensures quick unlocking in any situation, helping prevent accidents. Childproof Lock : 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 for door safeguards your children from potential dangers such as or pools when you're or occupied. And for the elderly or women living alone , 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. High door locks security door lock can meet your needs. door lock is suitable for any inward-opening apartment door, bedroom door, front door, back door, patio door and courtyard door. Please note: top door lock is not suitable for french double doors, garage doors, doors with spaces less than 0.07inch, outward opening doors, or doors with misaligned frames. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:black Material:aluminum Package Contents: 3 Security Door Lock