All of the flag hardware castings in the photos are
made of solid silicon bronze and have a tumble finish, not a
polished finish. The top row eagles attach to a wooden pole or ball.
The second row eagles attach into the hollow end of a metal pole,
typically 3/4 inch electrical tubing ( EMT )
The bottom photos illustrate the mounting bracket designed to hold 3/4
inch electrical tubing or
a wooden dowel. The strength of Silicon
Bronze compares to
steel and, like copper, it has the non corrosive quality
of copper. Ask about availability and price of polished castings
Web store link.