Save time installing your drip system with the Adjustable Flow Bubbler Assembly. The bubbler, stake, and inlet come preassembled and ready to install. The 8-stream bubbler emits water in a full-circle pattern at up to 13 GPH and radius of up to 3 ft. (at 15-50 PSI). Use the control dial to increase or decrease the output of water to your preference. Bubbler and tubing made of polyethylene; stake and connector made of ABS; all materials treated with UV inhibitors.