400 Series, 4", Spring Loaded Pop Up Sprinkler Head, With 4' Nozzle, Adjustable Spray Radius, Spray Patten Is Easy To Adjust From 25 To 360 Degree & Can Be Adjusted Even With The Water Running, With A Dual Port Flush Plug Nozzle Cleaning & Re-Installation Is Quick & Easy, Sprinkler Can Work In An Automatic Sprinkler System Or On Its Own.