1. Upgraded Version One-piece Design - Made of zinc alloy with a durable one-piece design for increased robustness. - Withstands up to 800 lbs of force and is about 12x stronger than a normal deadbolt against kicking in. - Each door lock latch includes 8 mounting screws (6 long and 2 short) to fit your door and frame needs. - This reinforcement lock helps keep your home secure and makes a practical gift for families. 2. Easy Install and Use - Includes stainless steel screws for quick installation on the door frame. - Installation can be completed in minutes; engaging the latch takes one second. - The package includes an installation manual; adjust the tightness using the back screws before mounting. - Note: This door latch is for inward-opening doors only. 3. Child Proof Locks - Arc design prevents children from unlocking the door with a hook. - Can be installed higher to reduce the risk of children opening the door to strangers or wandering out. 4. Keep Home Security - Adds extra security for your family when you travel or are away on business. - Suitable for both elderly parents and women at home alone, providing peace of mind. - Can be installed at home or in hotels as an extra door lock for personal safety. - Reinforces home security by helping prevent break-ins while still enabling quick access in emergencies.