Adjustable solid-state : complex designed bolt , adjustable : 60mm ( 2-3 / 8 inches ) or 70mm ( 2-3 / 4 inches ) to adapt to different installation situations zinc alloy : This is high-strength zinc alloy , which is and has a longer service life The electroplating process is not easy to off the paint The thickened copper body can open and close smoothly , and the body is rust and resistant for 35-53mm doors : left and right hands to open the door for 35-45mm thick doors , such as aluminum alloy doors , steel doors , old ball doors Wide application range : Quick installation door handle with and for , suitable for home or business use , such as : bedroom , school , shopping mall , apartment, Manufacturer: Watreketal