Make adjustments to your plants’ watering needs with a twist of the knob using the Dial-a-Flo™ Adjustable Bubbler. The bubbler head is also a calibrated dial that rotates to change the discharge rate from 0 to 20 GPH and the radius from 0 to 50 in. The fan-spray emitter releases water in a full-circle, 360° pattern. Ideal for watering groundcover, decorative grasses, flower and vegetable gardens, as well as trees and shrubs. The bubbler has a 1/4 in. barbed inlet that fits 1/4 in. distribution tubing (A220 and A250) or 1/4 in. Dura Flo™ JR dripline and attaches to the included 6 in. stake. Adjustable bubbler made of polyethylene, stake made of ABS plastic; both treated with UV inhibitors to prevent fading and cracking.