Designed to withstand 800 lbs of force, 12 times stronger than a normal deadbolt to against being kicked in. Not only prevent break-in but also easy open when meet urgent.Security Door Lock add extra security measures for toddler while you always on businessThis door reinforcement lock has a rubber stop design to prevent child from opening the door to unknown people.Use screwdriver and drill to mount security door lock on your door frame, finish door lock installation less than 5 minutes.Easy to match any inward swinging door. safety door lock guard your home security as a door .Place index finger on top of door lock and thumb on bottom and slide lock from the base plate along the door in the direction of the hinges then pull outward. No tools required to open, just a little practice.Color: silverMaterial: aluminum alloyPackage contents: 1* lock4* screwOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.