Professional Series, 4", Half Circle, Pop Up Spray Head, Dual Spray Nozzle, Patented Close In Watering For Most Efficient Uniform Water Coverage Eliminates Brown Spots, Patented Pressure Activated Co-Molded Wiper Seal, Stainless Steel Reduction Screw, Removable Grit Filter, Stainless Steel Retractable Spring, Easy Nozzle Alignment, 1/2" Inlet.