Additional Details ------------------------------ Product description: 2 inch Pop-up Sprinkler 1800 Professional Series Nozzle not included No tool required to change nozzles Heavy-duty design for longest life #1 Best Selling sprinkler in the world 1/2 in. female threaded inlet Heavy-duty stainless-steel spring helps ensure flush retraction every time Patented pressure-activated wiper seal prevents wasteful water leakage and helps assure long life.