• Automatic door bolt made of solid aluminum alloy, resistant to rust and corrosion, with high durability and long service life. • The special design incorporates an internal spring: pulling the ring opens the door and releasing it allows the spring to restore the locked state, increasing security. • Ideal for bedroom doors, cabinets, fences, windows, wooden doors, wardrobes, drawers, furniture, and pet cages, protecting property and personal privacy. • Easy installation: align the screws on the door and frame, and screw in the 8 included screws to secure the bolt to the wood. The location can be adjusted according to the door opening requirements. • High structural rigidity, does not deform easily, and provides an effective replacement for old or damaged locks. • Product size: 57 x 43.7 x 42 mm. • The package contains 2 door bolts and 8 screws.