High-quality zinc alloy: This lock uses high-strength zinc alloy, which is sturdy and and has a longer service life. Electroplating process, easy to lose varnish. Stylish elegant black. Adjustable solid-state lock: complex design , adjustable: 60mm (2-3 / 8 inch) or 70mm (2-3 / 4inch) to adapt to different installation situations. Also equipped with anti-aliasing protective bolts. Compatible with 35-53mm doors: support left and right hand opening. Compatible with 35-53mm thick doors, such as: aluminum alloy doors, steel doors, old-style ball lock doors, etc. Free door lock: We also provide you with a free door lock to prevent children from easily opening the door. It is easy to use simply by peeling the film and mounting it firmly on the door. Wide range of applications: Quickly installed door handles with locks and keys, suitable for home or business use, such as: bedrooms, schools, shopping malls, apartments, offices., Weight: 1.37568451488 pounds, Manufacturer: Jaywool