Double hole of high efficiency U -Series EfficiencyDouble hole sprouts that use less 30% waterThe patented Until of the U Series is the first plastic nozzle with a second hole for a nearby watering and a more uniform water distribution. Its unique patented design allows you to reduce watering, saving water and money, reducing waste.The U Nipples are compatible with all Rain Bird sprouts and shrub adapters.The Rain Bird headbobs of the U and MPR series are color -encoded at the top to improve productivity.FunctionalitiesThe additional arrangement for a nearby watering minimizes the brown points around the head of the sprinkler and eliminates gaps for a more uniform coverage of the entire watering areaUpper coverage for efficient watering. Use up to 30% less waterPrecipitation rate adapted with Rain Bird's He-Van and MPR nozzlesRangeSpacing: 5 to 15 feet (1.7 to 4.6 m) ²Pressure: 15 to 30 psi (1.0 to 2.1 bar)Ideal pressure: 30 psi (2.1 bar) ³