【Window Locks & Safety Measures】 These locks can fix sash windows in a slightly open position, making them convenient for ventilation in rooms, balconies, bathrooms, etc. By leaving the window open to allow airflow, you can also prevent burglars and thieves from entering. Highly recommended for safety measures in homes with single women, pets, or young children! 【Preventing Mischief by Children and Pets】 Window stoppers prevent babies from falling out of windows, prevent finger injuries, and prevent pets like dogs and cats from escaping or getting lost. We recommend installing them in two places, top and bottom, to enhance the crime prevention effect. Since they come in a set of two, you can install them on multiple windows. 【Excellent Impact Resistance and Durability】 Made of aluminum alloy and rubber, these window stoppers are scratch-resistant and durable. They fit most push-type window sizes. 【Easy Installation & No Construction Required】 The large knob makes it easy to turn and tighten. Installation is simple, and there's no need to drill holes in the sash with adhesive tape or screws, making them less noticeable than adhesive products. Highly recommended for rental properties! ＼Purchase Anytime, 24 Hours a Day／ ♥️ Limited to one item, first come, first served ♥️ Free shipping nationwide ♥️ We strive for 24-hour shipping. ♥️ Immediate purchase is welcome, silent purchase at midnight is OK ◎ ※ For product confirmation due to home storage, we have taken photos after taking them out of the bag. ※ As far as we can see, there are no scratches, dents, or stains. We would appreciate your understanding as it is a confirmation by an amateur. ※ Please understand the simple packaging for shipping. Window Lock, Screen Door Lock, Window Stopper, Anti-theft Goods, Sash Lock, Set of 2, Window Security Measures, Child Fall Prevention, Cat Escape Prevention, Easy Installation, No Construction Required, Window Auxiliary Lock, Screen Door Stopper, Die-cast Steel Product + Rubber, High Durability (Silver) 7-39 9942