1Withstand 800lbs: This door security lock Is designed to withstand maximum 800lbs of force for inward swinging door. It helps prevent doors from being kicked in. Increasing your home security and keeping your family safe. 2Simple Installation: This childproof reinforcement lock come with 16 screws. Simply mount the door security lock on your door frame using a screwdriver or power tools, saving time and effort. 3Easy to Unlock: To unlock, pinch the security lock on the top and the bottom. Then slide the lock sideways along the door to the direction of the hinges until it can be pulled outward. 4High Security: This door reinforcement lock adds extra security for toddler, prevent from opening door to strangers. Please install higher than the doorknob where your toddler can not touch. 5Aluminium Alloy: You will receive 2 pieces of childproof reinforcement locks, which is made of premium aluminium alloy material in high strength, give your home, your apartment an extra layer of security.