Premium quality: made of zinc alloy material, this door is very and anti rust for use Spring loaded plunger: excellent, with a spring loaded throw and a large soft rubber foot for good holding power Installation tips: this works best when is installed side of the door so that the door pushes against the when trying to close Good appearance: slim and blends with your decoration, very and simple appearance Door stoppers: this spring door stopper can help you to stop the and any degree you like, easy to push down and release, Manufacturer: Raguso