Features Perfect Fit For Your Window: Measure your sliding door or window track to ensure compatibility; requires a height greater than 0.39 inch and width less than 0.39 inch Versatile Applications: Ideal for sliding patio doors, windows, glass doors, vertical doors, and retractable screens, this lock can be installed on most types of doors and windows Hassle-Free Installation: Experience quick and easy setup with no extra tools or drilling required; simply position the lock and tighten the screw for secure usage Durable Stainless Steel Construction: Crafted from high-quality stainless steel, this security lock offers enhanced resistance to corrosion and aging, ensuring long-term reliability Adjustable Security Feature: Customize the sliding window stopper to your preferred opening, preventing unwanted access and providing peace of mind for your home security Features: 1、 FIT: To ensure the lock fits ly with your window, please measure the sliding door or window track before ordering, required height must be greater than 0.39 inch and width must be smaller than 0.39 inch. 2、MULTIPLE APPLICATIONS: The lock is suitable for sliding patio door, sliding window, sliding glass door, vertical door, retractable screen, and more, and can be installed on most window or doors. 3、EASY INSTALLATION: The window lock stopper features quick and convenient installation without extra tools or drills. Simply place the lock in the appropriate position and tighten the screw. 4、STAINL STEEL MATERIAL: Made of sturdy and reliable stainl steel, the window security lock is prevention and anti aging, ensuring long lasting service for your safety. 5、ADJUSTABLE DESIGN: The sliding window stopper allows you to adjust the window to a suitable position, preventing it from being pulled or opened, ensuring your security. Specification: Item Type: Window Lock Material: Stainl Steel Package List: 3 x Window Lock 3 x Triangular Key Package List 3 x Window Lock 3 x Triangular Key