Additional Home Security - Crafted from sturdy alloy, the Door Reinforcement Lock withstands up to 800 lbs of force, 16 times stronger than a normal deadbolt to against being kicked in.,Easy to Install - Each Door Reinforcement Lock is equipped with total 8 screws including 4 long and 4 short ones, select the appropriate screws, use an electric drill to install within 5 minutes. Easily add child locks for door. If the frame is too thick, it may not fit your door. Please check the image to see if our product is suitable for your door.,Easy to Use - Use your thumb and forefinger to pinch both the top and bottom grooves, pull to the side and swing away from the door to open the lock. Reverse the actions to close. You can also see a step-by-step instruction in our pictures.,Safe to Operate in an Emergency - Upgraded design and high-quality springs allow you to quickly open security door locks and evacuate from the inside.,Making Ladies and the Elderly Feel Safer - The sturdy door lock provide extra door lock security for elderly and ladies when they are at home alone.