Made of solid brass and chromed to a high polish finish. Modern square pipe design. Perfect for square rain shower heads. Designed to be mounted to the ceiling directly above your shower drain. 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 at the bottom to the shower head and 1/2″ NPT female threading at the top, to connect to water supply.