Package includes 2 window latches, 2 mounting hooks, 4 screws. Our window locks can be inserted directly into your original door handle and can be fixed directly without additional mounting screws. Sturdy and durable Window lock length 10.5 cm, windproof hook Made of high quality stainless steel quality with white coating to ensure it is rustproof and durable.Protection Also suitable as a cat and child safety lock, safety lock system for turn and tilt and turn inward opening windows. Ventilate the room safely and bring in fresh air. Easy installation Window locks are easy to install. Each screw comes with 2 screws, you only need a simple screwdriver to screw it in, easy to operate, no need drill to drill.Scope of application Window stays for sash or sash windows. Locks open windows at 4 different opening angles and prevents accidental slamming. Suitable for all common windows and doors made of plastic, wood or metal. Note: The data is all measured manually, please allow 1-3cm error, due to the light and display difference, there will be some color difference, the actual object received shall prevail.