The Rain Bird MANIFPR9S provides full adjustability of each port. This drip irrigation manifold will allow you to customize flow from 0 to 20 GPH for individual plants, improving root development and reducing plant stress. The manifold has 9 ports which accept standard 1/4" drip tubing. Each port adjusts with a side lever to increase, decrease or shut off flow. Attach 1/4" distribution tubing to barbed outlet and extend out to water plants with one or more drip watering devices. 1/2" FPT inlet threads onto a riser or converts an existing underground pop-up sprinkler to Drip with Rain Bird RC-KIT (sold separately). Constructed of UV-resistant durable ABS materials.