1.Home Security, Sturdy Door Reinforcement Lock: 3" 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 during the day or at night, enabling more relaxed rest. door lock is an ideal choice for enhancing your home security. 2.Easy to Install, : With a power screwdriver and drill, you can install the door lock on the door frame within 5 minutes. The metal reinforcement door lock comes with an installation manual for your reference during the installation process. 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. 3.little boy and little grilproof Lock Providing Peace of Mind: Reinforcement lock for front door features a little boy and little gril protection function. Door security lock unique spring-loaded design prevents little boy and little gril from opening the door to strangers. Flip lock for door guards your little boy and little gril from potential dangers such as the streets or pools when you're away or occupied. 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. 4.Suitable for Most Types of Doors: Whether you are a tenant or a landlord, you need to consider the 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 gaps less than 0.07", outward opening doors, or doors with misaligned frames.