Installed in parks and backyards across the globe, Rain Bird's 1800 Series is the #1 commercial-grade irrigation spray head brand in the world. Chosen for its reliability, heavy-duty materials and versatility, the 1800 Series has first rate quality built in for reliable operation and long life. Superior components and features make it the spray head of choice for a wide variety of applications. Heavy-duty stainless steel spring assures flush retraction, every time. Patented pressure activated co-molded wiper seal prevents wasteful water leakage and assures long life. Tapered pop-up neck helps remove debris during retraction. White medium mesh filter screen protects nozzle from clogging and maintains precise radius adjustment. Simple stainless steel top adjustment screw decreases or increases spray distance from 8 to 15 ft. Directional adjustment feature allows you to easily aim the spray head by hand. No tools needed to change nozzles.