Pole to Screw hole insert adapter (in this case attaching lights to pole)

Video showing the application of the thing(s).
http://www.youtube.com/watch?v=-62275D5DJ0

I really don't know what to call this. It's essentially a snap on adapter that attaches to a pole, and on the back there is a object similiar to a screw that slides into objects designed to hang by screws. As in you can hang stuff off of a pole if it has the slide on screw slots on the back. The basic design here is for fitting to a floor lamp, and the "screw" like pertrusion on the back slides into flo