Make adjustments to your plants’ watering needs with a twist of the dial with the Dial-a-Flo™ Adjustable Bubbler. Turn the calibrated dial to control the amount of water delivered—from 0 to 20 GPH discharge rate, and up to 48 in. radius. The 5-stream emitter releases water in a half-circle pattern (180°). 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 included 6 in. stake. Ideal for watering trees, shrubs, flower beds, groundcover, vegetable gardens, plants in pots, planter boxes, and hanging baskets. The adjustable bubbler made of polyethylene, stake is made of ABS plastic, both treated with UV inhibitors to prevent fading and cracking.