【2pcs Window Restrictor Locks】These childproof PVC window locks limit the opening distance of a window. They can be removed from one end, and the window can be fully opened with keys. Perfect for child safety and theft prevention. 【High-Quality Child-Resistant Window Safety】The window restrictor lock is made of high-quality aluminum, capable of withstanding greater pressure, offering enhanced safety, health, and security for your home and for babies/children. 【Smart Design】These window locks with a special 18cm limiting design provide a restriction of 11-16cm and allow fresh air in. The window can be fully opened after removing the cable at one end using the key. 【Easy to Install】These PVC window locks come with screws and keys; just a screwdriver or drill is all you need for installation. This window restrictor is suitable for most types of windows and small doors, and is compatible with many materials such as PVC, wood, aluminum, and metal. [Package Contents] Our window restrictors