2 Pack Door Reinforcement Lock, Home Security Door Lock, Silver Door Safety Lock for Front Door, Toddler Proof Door Latch for Entry Door Security, Includes 8 Screws

Additional Home Security: Built from durable alloy, this door reinforcement lock resists up to 800 lbs of force, offering 16 times the strength of a standard deadbolt to help prevent kick-ins.
Easy to Install: Each door reinforcement lock includes 8 screws in total4 long and 4 short. Pick the right screws and use an electric drill to finish installation in about 5 minutes.
Drill bit size: 1/8" ( 3.18 mm, a common size). Easily add child locks to your door.
Easy to Use: Pinch both the top and bottom grooves with your thumb and forefinger, pull to the side, and swing the lock away from the door to open. Reverse these steps to close. Safe to Operate in an
Emergency: The upgraded design and quality springs let you quickly release the security door lock and exit from inside. Making Ladies and the
Elderly Feel Safer: This sturdy lock adds extra security for elderly individuals and women when they are home alone.
Please note: this door reinforcement lock is not suitable for French double doors, garage doors, doors with gaps under 0.07", outward-opening doors, or doors with misaligned frames