Nelson Plastic Pulsating Sprinkler Head and Circular Base 50203 Coverage up to 85 feet in diameter Impact resistant plastic head Large 10.25 in. Diameter rezimar base Series connection Plastic easy swivel coupling with ergonomic grip Circular spray pattern up to 85-foot dia. Impact-resistant plastic head 10-1/4-inch diameter weighted base Series connection, ergo plastic swivel coupling 3/4-pound weight for stability