DANCO Shower Volume Control Shut-Off Valve, Chrome, 1.6 inch, 1-Pack (89171) WATER-SAVING shut-off for showers while in use - trickle feature allows you to minimize water consumption saving energy and money CHROME FINISH matches most existing features and constructed of DURABLE brass and plastic for strength and durability EASY TO USE AND INSTALL - simply attach the valve between the shower arm and head. For use - simple turn the nozzle to reduce or increase the water flow FITS 1/2 inch FIP x 1/2 inch MIP WATER CONTROL: Designed to be used during shower to control the amount of water flow