For small shrub or ground cover areas, 15' spacing. This head produces a tight, constant fan of water. Durable cycolac construction and a basket screen to prevent clogging. Stainless steel adjustment screw can reduce watering radius by 25%. Shrub body screws onto riser and is about 2" in height. Sprinkler comes with variable arc 0 deg (degrees) to 360 deg nozzle pre-installed.