Universal Installation,Fits most out-swinging doors; includes all necessary mounting hardware. No tools needed,thumbscrew dial makes it easy to fine-tune the door's closing speed for safety and comfort. Material: Stainless steel With a closer slide plate being surface mounted, installation is a breeze. Easily adjust the tension on this safety spring door closer.Get it mounted perfectly in minutes on any interior wood or metal door, Manufacturer: KUARWDVF