1. High Quality Material: The latch is made of ABS and iron. The iron needle core is not easy to oxidize and has strong corrosion resistance. The thickened plastic is environmentally friendly and durable, with strong strength and not easy to break. 2. Spring Loaded: Built-in strong spring, can be used multiple times without reducing the elasticity. Press the red button to instantly open, then press the core to lock. 3. Maximum Fixing Strength: The door closer has a large base, and the four-hole fixing can effectively fix doors and windows, providing you with security and privacy. 4. Application: These sliding bolt locks are suitable for all kinds of wooden door frames, such as wooden doors, wooden windows, kitchen cabinets, shoe cabinets, wooden cabinets and wooden sheds ; locks can protect you inside and out. 5. Installation: Drill and screw installation, package includes 4 spring loaded latches, screws are included.