Raindrip R153CT 3-Count 5-Inch Full Circle Fan Spray Bubbler On Stake Convert existing 1/2-inch underground sprinkler systems to low flow watering where a drip circuit can't be set up Bubbler flow rates are adjustable from 0 - 24 GPH at 30 psi Includes barbed connector for attaching to 1/4-inch Tubing Up to 13-foot spray diameter at 30 psi Built to last Bubbler Converts existing 1/2-Inch underground sprinkler systems to low flow watering where a drip circuit can't be set up Up to 13' spray diameter at 30 PSI Adjustable flow rates from 0 to 24 gph at 30 PSI Full circle