These 30-degree hinge pin door stops are constructed of diecast and come in a satin nickel finish. They feature an adjustable screw which allows for controlled stopping at various angles of door swing, and dual rubber tips for cushioning stops. These types of door stops require no fasteners to install, as they are mounted onto the door's hinge, or hinges. These door stops will work with hinge barrel pins that have a maximum outside diameter of 5/16 inch, and they can be installed on one, two, or three hinges of a door. Door stops like these are simple to install and they are used by many.