Control the water flow rate and spray range easily with the Dial-a-Flo™ Adjustable Bubbler. Turn the bubbler head that also functions as a calibrated dial to change the discharge rate from 0 to 20 GPH and the spray range from 0 to 50 in. radius. The fan spray releases water in a full-circle pattern (360°). To install, insert the 1/4 in. barbed inlet into 1/4 in. distribution tubing (A220 and A250) or 1/4 in. Dura Flo™ JR dripline and attach to a stake, or insert bubbler directly into hole-punched supply tubing. Ideal for watering trees, shrubs, flower beds, groundcover, vegetable gardens, plants in pots, planter boxes, and hanging baskets. The adjustable bubbler is made of polyethylene treated with UV inhibitors to prevent fading and cracking.