This set includes 4 hinged door stops, eliminating door wedges Size: The wire diameter of the stainless steel door automatic opener is approximately 0.06 inches, and the height of the coil is approximately 0.32 inches Material: The hinge door stopper is mainly made of stainless steel, reliable and reusable, sturdy and stable, not easy to break or rust, and can serve you for a long time. Easy to use: The installation and replacement of the door opener are simple and convenient. You can directly open the hinge pin, place the door opener on top, reinstall the hinge pin, or fix it to the wooden door with screws, bringing you a good user experience A cheap therapy to keep the door open.