Control the amount of water delivered to plants with the Dial-a-Flo™ Adjustable Bubbler with Stake. Turn the bubbler head which works as a calibrated dial to adjust the discharge rate from 0 to 20 GPH and the radius from 0 to 5 in. The emitter releases water in an umbrella-spray 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.