This inline chrome plated shower shut off valve is a great way to lower your water bills and consumption by shutting off 80-90% of the water to your shower head while soaping up, shampooing, shaving and lathering. The Rainsaver Shower shut off valve is mounted inline between your shower head and the original plumbing. All you need is a simple wrench and 5 minutes of time to install on any shower head. With this valve you can conserve 15% or more in water and energy costs. This valve will not completely shut off flow, but will reduce the flow by 80-90%.