1800 Professional Series pop-up sprinkler. Among superior performance features is a patented co-molded wiper seal that clears debris at pop-down and, together with a strong stainless steel internal spring, ensures positive stem retraction and a tight seal season after season. Directional adjustment allows user to aim spray pattern by hand. Top adjustment screw reduces spray distance up to 25%. Pop-Up Height: 4 In. Spray Pattern: Full Circle Spray Radius: 4 Ft. Inlet Type: 1/2 In. FNPT Material: Plastic