• Made of cast A356 aluminum, mechanically assembled to the pole.• Available for a 4”(102mm) to 4.9”(124mm) or 5" (127mm) to 6”(152mm) roundor 4”(102mm) minimum square pole.• Available with Helios, RoadView, RX series, MiniView, RoadFocus and StreetView.• Consult Factory to insure compatibility with your pole and fixture.