MaterialThe automatic door lock is made of high quality aluminum alloy, which does not rust. The surface is painted or anodized, corrosion resistant and durable. Information PackageThere are 4 door latch in the package, 2 of them are black and 2 are silver. You can use the door lock in the appropriate color according to the door or the environment. Spring DesignThe interior of the window lock is designed with a spring structure. there is no external force, the door will not open. When you want to open the door, gently pull the lock ring. Easy InstallThe spring bounce lock is easy To install, we come with 16 screws, you just need to align the screws with the door and door frame, and drive the included screws into the wood to secure. Wide Application The aluminum door lock is suitable for fixing small doors, windows, yard doors, desk drawers, cabinets, tool boxes, lockers, kitchen cabinets, etc. : 1. The automatic door lock has a refined and concise appearance, sealed and welded, thickened and reinforced at the bottom, not easy to break and deform, and durable. 2. The aluminum door lock is exquisite and compact, with high hardness and good stability. Equipped with a spring, it will not open accidentally. 3. Spring bounce lock is suitable for fixing windows, desk drawers, cabinets, lockers, etc. to better protect the privacy and security of you and your family. 4. The door latch can be used on all doors and windows, garden doors, high rise windows and bathroom doors that require frequent opening and low security. Specification: Material: Aluminum Alloy Color: Black, Silver Size: as shown Package includes: 4 x Door Latch Notes: 1. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. 2. Please allow slight dimension difference due to different manual measurement. 3. If you have any questions, do not hesitate to contact us. We will answer your questions within 24 hours.