The steel poles, supporting the double wire and single wire systems, are independent of the decorative bases. So the offerings of various males don't matter, structurally.

Van Ness to the bridge terminal turnoffs, has poles designed to handle six trolley wires and their curve and turnoff accessories, two cross feeders, "Path of Gold" building lighting, street lighting, traffic signals and signs, and the decorative collars - plus wayward motorists. The steel pipe is oil field drill stem.