Wide range of applications: suitable for doors and windows, cabinets, bathrooms, furniture locks, etc. to fix doors and windows and ensure safe locking. 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 multiple times without affecting elasticity. Press the red button to open it immediately, and then press the pin core to lock it. Maximum fastening force: the size of the latch is as shown. Door Latch - Automatic Door Lock, Aluminum Door Latch, Window Door Security Ring Spring Loaded Spring Bolt Latch Installation: Drill and fix with screws. Package includes 4 x spring latches. Note: The data is all measured manually, please allow 1-3cm error. Due to differences in light and display, there may be some color difference, please refer to the actual item