DANCO Energy-Saving Shower Shut-Off Valve, Chrome, 1/2-Inch IPS, 1-Pack (80782X) This product's durable brass and plastic construction provides strength and reliability. This fits a standard 1/2-inch IPS connection so just simply attach the valve between the shower arm and head to install. This easy-to-use product is designed to be used while using the shower to control the water flow, just simply turn the nozzle to reduce or increase water flow. The trickle feature allows you to minimize water consumption saving both energy and money, just look for the trickle of water to remind yourself to shut the water off. The product is finished in a modern and sleek chrome to help match most exisitng features.