No more children or pets locking you or themselves in a room; Prevent children from entering specific rooms like toilets or storage rooms without adult supervision; Prevent children from playing with the door and pinching their fingers. High Quality Material: This sliding door lock is made of strong, solid and durable ABS rubber. Strong 3M adhesive tape works on many flat surfaces like glass, wood, plastic and metal, helping the locks stay firmly on various sliding doors and windows. Easy to install: Our window restrictor is very easy to install, without tools or drilling. These window locks are equipped with 3M VHB industrial foam glue, which has strong adhesion; just peel and stick. Locks automatically, no key required. Restrict window openings: The window restrictor allows the maximum window opening distance to be 7 cm. Prevents children from escaping from the window. At the same time, it maintains ventilation and air circulation. Versatile Use: This child safety lock can be used on sliding glass doors, sliding doors, and sliding windows at home, such as balconies, closet doors, kitchen doors, wardrobes, and other doors.