<p>High quality materials: door and window lock made of iron + zinc alloy and rubber, durable, safe and healthy. You don't have to worry about its lifespan. Our window locks also improve the disadvantages of other window locks which are not fixed and not suitable for installation on the center armrest. You don't have to worry about window lock security.</p> <p>Easy to install: Our window locks are easy to install. Simply clean the lock area and close or open the window before installing the window stopper; Firmly insert the legs into the window slots and turn the knob clockwise until the product is fixed.</p> <p>Good security: our door and window locks reduce effectively the fall hazard of children and pets. By closing the windows, it can also protect your belongings from storms and hurricanes, or protect you from theft and property damage during your trip.</p> <p>Multifunction: Our door and window locks are available on most wood, glass, plastic and metal surfaces.</p> <p>You can protect children from sliding doors and windows in yards, closets, showers, warehouses and recreation centers.< /p>