Amazon.com : Rain Bird 1800 Series Pop-Up Sprinklers 10 PACK - Nozzles NOT included - RainBird 4" 1804 model pop up irrigation sprinkler for lawn, yard, garden, planter beds : Patio, Lawn & Garden
How to install a Rain Bird 1800 series nozzle. - YouTube
Rain Bird 12-ft Full-circle Spray Head Nozzle in the Underground Sprinkler Nozzles department at Lowes.com
Rain Bird Adjustable Pattern 4 in. Pop-Up Spray Head 1804AP-25