The home security door lock has a steel ball positioning function, which is a unique locking design that fixes the locking arm in place and therefore does not swing, thereby improving . The countersunk hole design makes the security lock elegant and elegant.The reinforced lock has a long swinging lever that folds over the closed door. The installation is quick and easy using the screws in the package, which is very simple and can be easily installed in just a few minutes by almost all homeowners.The are made of high-quality solid aluminum alloy with a beautiful finish and finish to complement your home décor. The door lock is not easy to or oxidize and has a longer service life. The extra-thick arm and sturdy locking base ensure rugged quality and withstand up to 600 pounds of force. The home security door lock can be easily unlocked from the inside with a simple swing action, but it is too strong to be opened from the outside.1 X lockRevolving door locks are locks for swing doors that allow indoors to open a few inches of doors for identification or ventilation while providing privacy and security for guests and residents.It is also possible to install the inaccessible to children so that they cannot open the doors themselves, thus providing more child door security. Note: When the door is flush with the door frame, it is compatible with most wooden doors and trim strips!product descriptionProducts include