The Whedon Chrome Rainbo Massage Shower Head gives you a refreshing, exhilarating shower with 7 different flow settings. Complies with federal codes, 2.5 GPM Max at 80 psi. 4” diameter nozzle, standard ½” female connection. Includes 5 Flow Rate System toinsure quality flow even in low pressure. Chrome plated brass swivel ball connector, ABS body. Installs easily on any standard shower arm.