Rain Bird Falcon Stainless Steel Sprinkler Head with 4 in. PC (partial circle) Stainless Steel Rotor w/Nozzles. This is the heavier duty version of the standard Rain Bird Falcon Sprinkler Head as it comes with the stainless steel riser. The stainless steel is resistant to fungicides, gypsum and vegetation sterilizers which give this head a longer resistance to the wear and tear of a normal HarTru tennis court. With excellent court coverage and a high volume of gpm this head can handle most any above ground watering court situation.