Ensure Child Safety: The childproof window lock is designed to restrict opening distance of windows and doors to help reduce the risk of injury from falls. Meantime allows fresh air flow. Choose Aosite child safety window locks for peace of mind and a safer home environment.<br> More Convenient: The upgraded window safety restrictors size is 7.5 * 3.2 CM, which is more suitable for the width of most windows and can be used for wooden, PVC, and aluminum hinges windows, casement windows, and sliding windows. Compared to the traditional screw window lock, the back area is enough for adhesive to ensure safety, also can used by screws, provide you with more choices.<br> Easy to Install: This window lock not only has strong self adhesive properties but also has screw holes. You can use the included self tapping screws to install in two ways to ensure double safety. With these easy to use locks, your windows are securely fastened and can only be opened with the key provided, preventing curious children or pets from opening them without adult supervision.<br> Sturdy and Durable: Aosite effective safety window locks are perfect for high rise apartments, homes with children or pets, or any other situation where extra security is needed. The window safety catches are made of sturdy metal heads and high tension steel cables, which are more durable. It has been tested to withstand a horizontal force of 100 kg.<br> Wide Applications: These baby safety locks can be used as a refrigerator lock, toilet lock, cupboard lock, etc; ideal for many windows, cupboard, drawers, and doors, preventing your little adventurer or cute pet from going to dangerous places. It can also be used to press down the toilet lid and seal the doors of microwaves, refrigerators, and other appliances.