High quality material: the latch is made of ABS and iron. The iron pin core is not easy to oxidize and has strong corrosion resistance. Thickened plastic is environmentally friendly and durable, with strong stress and not easy to break. Spring-loaded: Built-in strong spring, can be used for many times without reducing the elasticity. Press the red button to open it immediately, then press the pin core to lock it. Maximum fixing force: Latch size is as shownDoor Latch - Automatic Door Latch Aluminum Door Bolt Latch Window Security Door Spring Pull Ring Spring Bounce Bolt Latch Bolt With Screws (Black), the door closer has a large base, four mounting holes can effectively fix doors and windows, you providing security and privacy. Application: These sliding bolt locks are suitable for various wooden door frames, such as wooden doors, wooden windows, kitchen cabinets, shoe cabinets, wooden cabinets and wooden sheds; locks can protect you indoors and outdoors.