1/2" FNPT, Full Circle, Pop Up Sprinkler Head, 1-3/4" Riser, Plastic Head, Solid Brass Insert Nozzle, Brass Flow Adjustment Screw, Brass Nozzle Has An Adjustable Flow Screw & Sprays A Distance Of 10' To 15' Radius, Stem Rises 1-3/4" Above The Ground & Drops Into The Riser When Not In Use, High Quality Plastic Construction.