Easy to install, the Brasscraft mixet diverter tub Water pressure activated diverter feature will automatically retract when the shower valve is turned offFor use with 1/2 inch nominal copper pipe 5/8 inch O.D. connections, tub spout is 6-1/2 inch long and includes easy-to-follow installation instructionsGenuine OEM mixet part number 81Complies with California energy commission requirementsPerfect for contractors, maintenance repair professionals and do-it-yourself owners