These 30-degree hinge pin door stops are constructed of diecast. They feature an adjustable screw that allows for controlled stopping at various angles of the 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 doorstops will work with hinge barrel pins that have a maximum outside diameter of 5/16 in., and they can be installed on one, two, or three hinges of a door. Doorstops like these are simple to install and they are used by many.