This provides an additional layer of security for your bedroom, front door, or any other entryway Rest assured knowing that your doors are reinforced and protected Child-proof and tamper-proof: this door guardrail adopts spring-loaded design to the of children Easy to use: put your finger on the top of the door, slide the away from the bottom plate along the direction of the door, and then pull it outs Easy installation: install the door locks on the door frame with an electric screwdriver and a drill bit to complete The reinforced door has been installed for less than 5minutes Equipped with two sets of screws, four 1-inch ( about 2.5cm) and four 2-inch ( about 5.1cm) screws, and the length of the screws can be selected as required Keep your home safe: the door is designed to withstands 800 pounds ( about 362.9 kilograms) 12 times strongers than the ordinarys door bolt, to being kicked in, Manufacturer: Kaeltsyn