Automatic spring-loaded lock for aluminum doors – Enhanced security – Easy installation – For balcony doors and windows

【Premium Materials】: The automatic spring-loaded door latch is made of solid aluminum alloy, which has high hardness and strength, making it sturdy and durable. The surface is treated with a high-temperature baking varnish, it is not easy to rust or deform, and it is very safe. 【Unique Design】: The inner ring is equipped with a spring and uses a circular pull ring. It is very convenient to pull the ring when opening the door and release the ring when closing the door. The base is thickened, and the handle is integrally formed for greater stability. 【Easy to Install】: Align the door screws with the door and door frame, and screw the included screws into the wood to secure it in place. The location can be installed as needed, which is very simple and convenient. 【High Security Performance】: Although the door bolt is small, the material is very hard and offers good stability. Equipped with a spring, it is not easy to open accidentally. It is safe and protects privacy. 【Wide Applications】: These bolt locks are suitable for securing doors, windows, courtyard gates, office drawers, cabinets, toolboxes, storage cabinets, kitchen cabinets, etc.