Why it's necessary --- Children/pets open the window and tend to jump out. fall out of the building. Open the closet and make chaos. To prevent children from getting their fingers stuck. Multiple scenes --- Additional heightening accessory, suitable for children. à Most sliding windows, cabinets or cabinet doors on the market. Automatic Lock --- Two-way automatic lock which not only prevents children from falling from the building when opening the window, but also prevents fingers from getting caught when closing the window. Multi Pack --- Set of 3 sliding window locks can be installed anywhere. several places. The design is not eye-catching and keeps the baby out of sight. silently. Quick installation: No additional tools are required for installation with clear acrylic tape. Can withstand 66 lbs pulling force. Acrylic tape leaves no trace if you remove the window locks.