Take the guesswork out of setting up a drip system with the Adjustable Flow Micro Sprinkler Assembly. The micro sprinkler, adjustable riser, stake, and inlet come preassembled and ready to install in minutes. Fan spray micro sprayer emits water in a quarter-circle pattern at up to 24 GPH and radius of up to 13 ft. (at 15-50 PSI). Increase or decrease water flow with a twist of the dial. Micro sprinkler, riser, and tubing made of polyethylene; stake and connector made of ABS; all materials treated with UV inhibitors.