10 Pack 1800 Series Pop Up Sprinklers - Nozzles Not Included - 4" 1804 Pop Up Irrigation Sprinkler For Lawn, Yard, Garden, Planters.Installed In Parks And Gardens Outside Worldwide, The 1800 Series Is The 1 Commercial Irrigation Spray Head Brand In The World. Chosen For Its Reliability, Its Robust Materials And Its Versatility, The 1800 Series Has An Exceptional Quality. Built-In Premium Quality For Reliable Operation And Long Life. Their Superior Components And Features Make Them The Spray Heads Of Choice For A Wide Variety Of Applications. Of Applications. Wiper Seal. The Exclusive Co-Molded Wiper Seal Has A &Laquo; Cage &Raquo; Plastic Wrapped To Provide Unparalleled Resistance To Gravel, The Pressure And To The Environment. In Addition, The Multifunction Seal Activated. By Pressure Ensures A Tightness; Positive Without Excess Flow Which Allows To Install More Heads On The Same Valve. Precision The Precisely Controlled Click-Action Flush Clears Debris From The Unit, Ensuring Positive Stem Retraction In All Floor Types. Solid Spring. * Heavy Duty Stainless Steel Spring For Reliable Rod Retraction. Construction * Manufactured Made Of Uv-Resistant Plastic And Weather-Resistant Stainless Steel Parts. Corrosion, Ensuring A Long Product Life. 1800 Pop-Top Orange Pre-Installed The Flush Plug Prevents Debris From Entering After Flushing. Allows For Easy Nozzle Installation.