Rain Bird A17AP matched precipitation rate shrub spray nozzle, adjustable 0˚ to 360° pattern with adjustable 6' to 15' spray distance. From the Manufacturer: 1/2" female pipe connection mounts above ground on a 1/2" riser tall enough to clear shrubs and tall plantings. Easily customize nozzle spray pattern from 0˚ to 360˚ degrees with a simple twist of the textured center collar. Rain Bird Adjustable Pattern Nozzles can be adjusted to the exact pattern of your landscape; ensuring precise watering with minimal overspray waste. A physical left edge indicator makes it easier to feel the fixed left edge. "Captured" screw slot prevents screwdriver slippage during adjustment. Stainless steel adjustment screw adjusts flow rate and spray distance from 6' to 15'. Blue fine mesh filter screen protects from clogging and maintains precise radius adjustment. Trusted for decades, Rain Bird MPR Nozzles feature Matched Precipitation Rate watering distribution technology. Nozzles with varying arcs and radii can be mixed on the same zone regardless of spray adjustment and still maintain even water distribution rates. Rain Bird “The Intelligent Use of Water"
From the Manufacturer
Adjustment screw regulates distance of throw for spacing from 6 to 15 feet apart. Matched Flow Rate nozzle assures uniform watering when different patterns are mixed on the same zone. Mounts above ground on a riser tall enough to clear shrubs and tall plantings. Seven assembled patterns: Full, Half, Quarter, End Strip, Center Strip, Side Strip and Adjustable Pattern. 1/2-inch (13mm) female pipe connection. The shrubbery Spray Head with the Patented Adjustable pattern nozzle waters any part of a circle from 0 degrees to 360 degrees. Easy to adjust pattern for complex watering needs. - no tools needed. The Shrubbery Spray Head with the Patented Adjustable Pattern nozzle distributes water evenly regardless of pattern set and is compatible with other Rain Bird match flow rate nozzles.