Flusso shower arm pipe fittings are constructed of solid brass and have universal G-½" male connections on both ends to connect the showerhead to the water supply in the wall. Flusso shower arms are compatible with all Flusso shower heads and rain heads and include a sliding flange to cover up the hole in the wall / ceiling. Shower arms are available in round and square designs in size ranging from 6 – 20 Inches.