Rain Bird Micro-Bubbler - Micro-Bubbler watering device for drip irrigation systems. Connect to 1/2 In. tubing with barbed coupling (included) and 1/4 In. tubing. 4-pack. - Spray Pattern: Full Circle, Flow Rate: Adjustable, Inlet: 1/4 In., Pressure Rating: 20 psi, Pkg Qty: 4, Package Type: Hang Tag