Professional Series, 4", Adjustable Pattern, Pop Up Spray Head, 0 To 360 Degree, Hi Efficiency Rate Nozzle, HE Nozzle Provides Larger Droplet Size & Lower Trajectory & Reduces Run Times By 35%, Patented Pressure Activated Co-Molded Wiper Seal, Stainless Steel Reduction Screw, Removable Grit Filter, Stainless Steel Retractable Spring, Easy Nozzle Alignment, 1/2" Inlet.