Self Closing Door Hinge

Includes 2  Hinges, 4" x 4" with 5/8 radius corners.  Hex wrench, tension rods, and matching installation screws included for your convenience. Made from heavy duty steel: These automatic door closer hinges are made from heavy duty steel that's highly resistant to rust and corrosion. These are high-performance hinges that are designed to last. Doors will close automaticly: No more forgetting to close doors in your home.  For use on exterior or interior doors. Designed to be installed on any left hand operated or right hand operated doors. They’re designed to fit doors that are 1-3/4 inch thick. UL listed for positive pressure fire test.