QUALITY MATERIALS: easy locking mechanism made of zinc alloy, button lock opening system. Rotating design: after installing the latch, simply turn the button on the latch to adjust the opening and closing degrees of the latch Flat lock: the bolt is flat, reliable anti-intrusion protection, anti-theft device, suitable for left or right door, goodbye to lock tangling installation. The package includes: an anti-theft window lock, 1 bolt and 6 screws for screw mounting. Scope of application: the anti-blocking lock mounted in surface is suitable for all kinds of swing doors, bathroom door locks, bedroom doors, balcony doors and multi-purpose styles that give you different effects and provide you with reliable protection. It's your home safe