Deliver precise watering for up to 4 individual plants with the Hydroport™ Adjustable Flow Bubbler. The non-pressure compensating emitter has a 1/2 in. FPT inlet which screws onto an underground sprinkler riser. Bubbler comes equipped with 4 barbed swivel outlets that connect to 1/4 in. distribution tubing (A220 and A250) or 1/4 in. DuraFlo™ JR dripline; rotating outlets allow tubing to be positioned as desired. The discharge rate of each adjustable outlet can be individually set from 0 to 20 GPH. The Hydroport Bubbler features a built-in removable filter to help prevent clogging. Filter can be cleaned to extend the system lifespan. Made of ABS plastic treated with UV inhibitors to prevent fading and cracking.