Replaces Rain Bird AG-5, Orbit and Lego sprinklers. 5 interchangeable, color coded MPR nozzles from 1.5 to 7.5 GPM. No tools needed to change nozzles. Unique lip case design aids in setting proper installation height, prevents grass and weeds from growing into head and minimizes backwash. Heavy-duty, high-impact case with sturdy, reinforced ribbed design. Pressure-activated wiper seal assures reliable pop-up and pop-down.