Quick-Snap In-Ground 4-Inch Pop-Up Adjustable Spray With Quick Hose Connector, AYK-621 4 inch pop-up Spray hides in your lawn just like a contractor installed system Pops up with water pressure and automatically drops down when water's off so you can mow right over it Plant unit in small hole then snap on hose from any direction Select from one of three preset rectangular spray patterns 2 year warranty