Door hanger
From wipipedia.org
A door hanger is a simple mechanism by which an overhead attachment point for bondage can be created. It works by simply placing it over the top of a door and shutting the door; the metal tube prevents the webbing from slipping through the gap between the door and the frame. When in place, it provides a strong and easy to use attachment point. They are made from heavy duty webbing and a steel D-ring
