The Rain Bird Mini-Paw Pop-Up ½” Inlet Impact Rotor Sprinkler is a low & meduim gallonage pop-up impact rotor sprinkler with 1/2 inch inlet. Water Saver brass weighted PJ™ spray guide arm controls stream, prevents side splash onto buildings and walkways. Patented, pressure-activated wiper seal assures reliable pop-up and retraction. Diffuser screw breaks water into smaller droplets for uniform watering. Rugged, high-impact case dimensions: 4 1/8" diameter, 8 5/8" high. Spacing from 26 to 41 feet apart (7,9 to 12,5 m).