Irritrol IPN-15Q Black Quarter Circle Nozzle with 15' Radius 4.75 GPM are designed to simplify your design process while delivering the precision performance you’ve come to expect. An I-PRO MPR nozzle ensures even water distribution within an arc family allowing for accurate control of precipitation rate, radius and flow. Runoff and over-watering are both dramatically reduced. And compared to the competition, these I-PRO nozzles give an equal to or lower on-average precipitation and flow rate adding greater irrigation efficiency. Color-coded on top for quick radius identification, users will be able to easily verify proper nozzle installation–whether the system is on or off. Available in 5 radius sizes and 6 arc settings