Hunter Sprinkler I2504SSHS I-25 Stainless Steel Gear Driven High Speed Pop-Up Sprinkler, 4-Inch It's compact, highly durable design comes with an optional stainless steel riser for tough-as-nails strength With a 5-year warranty, the I-25 also has options for reclaimed water ID and high-speed A standard check valve is built in and a wide selection of high performance nozzles are available Efficient, tough and built-to-last, Hunter's I-25 rotors work hard day in and day out so you don't have to