Water gardens, flower beds, ground cover, and hillsides with low volume overhead irrigation using the Micro Spray Jet. Place on a rigid riser with stake (not included) and the fan spray emits water in a quarter-circle pattern at up to 12.9 GPH with a radius of up to 9.0 ft. (at 15-50 PSI). Screw jet onto riser and connect 1/4 in. supply tubing to the inlet barb on stake. The Micro Spray Jet works at low pressures, so a pressure regulator is recommended to reduce water pressure and prevent the jets from popping off. Made of polyethylene treated with UV inhibitors.