Keep Safe - With withstand 800 lbs. it is much stronger than other locks. has a spring-loaded design to prevent child from opening the door to unknown people. add extra door lock to keep you and your children safe. Easy Use - Just hold the lock and pull outward. the lock will be open quickly. It will not bother you when you are in an emergency situation. Easy Installation - Just screw the lock on the door frame. and the lock will be installed in serval minutes. Wide Usage - Reinforcement lock provide extra security measures for your family members during the time of business. With the spring loaded design. it can prevent the child from opening the door for unknown people. Pack age includes - 2 Pack Door Locks. Enjoy a smooth frustration free experience with our 100% Satisfied Service in one Month