Can anyone tell me what size (diameter)pipe/tube was used in making this pole. I am thinking of making one to put on top of my 12 foot pole. The currant pole has a pipe flange on top. It is actually part of a Sinclair pole. Thinking of using a hydraulic pipe bender to fab it. I have a 42 inch Texaco sign with the ring and hangers for a Shepherds style pole.