High-quality Material: The window safety lock is made of aluminum alloy, with exquisite workmanship, durable and sturdy. Anti rust coating makes good match for sliding windows, The upgraded double lock design is more secure and suitable for heavy doors and windows. What you get: Equipped with 2 locks, 2 keys, 2 non-slip rubber pads, 1 vertical hex key, If you have any question, please feel free to contact us, the after-sales team will handle your problem as quickly as possible. Just "Add to cart" and buy it now for your convenient life. Simple Installation: No need to punch saves time and effort. With the matching key, no additional installation tools required.the installation can be completed in 2 minutes, Easy to reuse and reinstall. Our window locks are also equipped with rubber non-slip protection pads to prevent scratches or damage to your window and improve stability. More peace of mind: Window locks are great for sliding patio doors, sliding windows, sliding doors, vertical doors, sliding glass doors, and more. By locking your windows, it keeps your family safe. protect against the risk of children and pets falling from heights, or guard against theft and avoid property damage during your traveling period. Mounting Dimensions: In order to ensure the perfect application of window locks,sliding doors and vertical doors. Please make sure your window the height of track more than 0.6 inch (1.5cm) high and the width no more than 0.63 inch (1.6cm) before ordering window locks. The window lock comes with a vertical key that can be applied to the middle rail of the window.