Features Security Window Lock: This sliding window lock has 2 fixing holes, greatly enhancing the grip and security of the lock. Prevent thieves from entering or pets from being lost, improve indoor ventilation when traveling or going out. Applicable Range: The opening of this window lock is suitable for 0.39 inch tracks, making it ideal for vertical or horizontal sliding window. The double wing screws ensure that these window stops can be tightly clamped. Convenient to Use: The key knob design is convenient to tighten and loosen, simply clip the rail lock into the sliding window or door rail, and this window stop does not require any type of structural modification. High Efficiency: In emergency situations, you can easily lock and remove the window clip by slowly threading the key through the hole and controlling it to grab the rail, without having to search for the key. Wide Application: Includes 10 pieces window limit locks, widely applied to keep window partially open or closed, enhance indoor air circulation, prevent burglars from entering the room, or ensure the security of your kids. Spec: Item Type: Window Limit Lock Material: Stainless Steel Package List: 10 x Window Limit Locks Package List 10 x Window Limit Locks