Product Description Rain Bird 1806 SAM Pop-up 6″ Ratcheting on all models for easy nozzle alignment Exclusive pressure activated, multi function wiper seal Flow and radius adjustment screw Wide choice of nozzles (pattern, angle and throw) ” female threaded side inlet on 1812 Additional Information Shipped with 1800 pop-up flush plug to keep out dirt during installation SAM Check valve – Prevent build up of water around lowest heads PRS – Pressure regulator fitted in stem of sprinkler This is the Body Only and comes without a Nozzle Click for Product Brochure