【Automatic Door Lock】The rebound door latch is equipped with a spring, and the circular pull ring is used to thicken the base, which makes it easier to replace and improves safety. 【Safety Spring Lock】Spring latch for fixing small doors and windows, pet cages, attics, courtyard doors, desk drawers, cabinets, toolboxes, lockers, kitchen cabinets 【Easy to install】Align the door bolts with the door and door frame and make marks. Drill the frames and doors and screw them with the screws provided. 【High Quality Material】The spring loaded latch bolt is made of solid aluminum alloy, painted black on the outside, not easy to fade, not easy to damage or deform, long service life 【Small Security Lock】You will receive 4 small window latches with 16 screws. You don't need to buy additional screws, which is convenient and practical.