Rain Bird 1300 Full Circle Flower Bubbler Head 1300A-F Full circle pattern only Stainless Steel adjustment screw regulates flow and radius for spacing between from 1 to 3 feet (0.3 m to 0.9 m) apart Fully adjustable flow - Operates over a wide range of pressures Shipped with SR-050 1/2 in. (15/21) inlet filter screen for easy installation and resistance to debris Non-corrosive plastic and stainless steel construction for long life