High quality material: The spring automatic door latch is made of solid aluminum alloy, which is resistant to rust. The door lock has high structural rigidity, long service life and will not be deformed. SecurityAutomatic high-quality door locks provide additional security for doors and windows. Adding a lock increases security once. Unique design: the inner ring is equipped with a spring, when you need to open the door, pull the ring, and when you close the door, loosen the ring. The internal spring is restored and the door lock returns to the locked state. Easy Installation: Align the door screws to the door and door frame, and screw the attached screws into the wood to secure. Can be installed freely from different angles(Please note the door opening direction Incorrect installation may affect the practical effect). Wide Application: Door bolt locks are suitable for fixing small door, window, courtyard door, desk drawer, closets, tool boxes, storage cabinets, kitchen cabinets, etc.