【Material】 The automatic door lock is made of high-quality aluminum alloy that does not rust. The surface is painted or anodized, corrosion-resistant and durable. 【Package Information】 There are 4 door locks in the package, 2 of them are black and 2 are silver. You can use the door lock in the appropriate color depending on the door or environment. 【Spring Design】 The inside of the window lock is designed with a spring structure. If there is no external force, the door will not open. When you want to open the door, gently pull the lock ring. 【Easy to Install】 The spring lock is easy to install, we supply 16 screws, you just need to align the screws with the door and door frame and screw the included screws into the wood to fix. 【Wide Application】 The aluminum door lock is suitable for fixing small doors, windows, patio doors, desk drawers, cabinets, toolboxes, cupboards, kitchen cabinets, etc. Product Description: 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. The spring lock is suitable for fixing windows, desk drawers, cabinets, cupboards, etc. to better protect your and your family's privacy and safety. 4. The door lock 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 locks Notes: 1. Due to the difference in light and screen settings, the item's color may be slightly different from the pictures. 2. Please allow a slight dimension difference due to different manual measurements. 3. If you have any questions, please feel free to contact us. We will answer your questions within 24 hours.