Raindrip 13400UB Hydro-Port Adjustable 4-Outlet Manifold Waters up to 4 plants with 1 unit, fully adjustable ports with flows that can be individually set from 0 to 30 GPH Swivel arms help in fine-tuning the position of the outlet tubing Pressure rated up to 80 PSI, built in filter extends system lifespan by preventing clogging from debris