Made of solid brass and coated in a brushed nickel finish.Modern square pipe design. Perfect for square rain shower heads.Extra long curved gooseneck arm reaches 12", designed to be used for large shower heads.Perfect for use with a rain shower head.Standard threading dimensions, will work with any standard shower head.Extended length for those that have high ceilings or simply prefer a longer arm in order to reach the desired height or distance.1/2" NPT male threading connects to showerhead and 1/2" NPT female threading connects to wall water supply.