Why need it No more children or pets locking you or themselves in a room; Prevent children from entering specific rooms like toilets or storage rooms without supervision adults; Preventchildren from playing with the door and pinching their fingers. High Quality MaterialThis sliding door lock made of strong, solid and durable ABS rubberStrong 3M adhesive tape works on many flat surfaces like glass, wood, plastic and metal, helping themlocks to stay firmly on various sliding doors and windows. Easy to installOur 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. Lockdownautomatic, no key required. Restrict window openingsThe window restrictor allows the maximum window opening distance to be 7cm. Prevent children from escaping from the window. At the same time, it can maintain ventilation and air circulationfresh. Versatile UseThis child safety lock can be used on sliding glass, sliding doors, sliding windows at home, such as balconies, closet doors, kitchen doors, doorwardrobe, etc. doors with this adhesive child safety lock.