ALFI brand  AB8RC-BN 8-Inch Round Ceiling Mounted Shower Arm for Rain Shower Heads, Brushed Nickel Made of solid brass and coated in a brushed nickel finish Traditional round pipe design. Perfect for round rain shower heads Designed to be mounted to the ceiling directly above your shower drain Comes with a brushed nickel back cover plate. Finish is compatible with Brushed Nickel or Stainless Steel showerheads Standard threading dimensions, will work with any standard shower head