This Rain Bird Adjustable Drip Bubbler Conversion Kit makes connecting a drip irrigation system to an outside faucet simple. The kit includes a backflow preventer, a 25 PSI regulator, and a mesh filter for reliable drip system operation. To automate your watering schedule, add a Rain Bird hose-end timer. This rainbird kit provides everything you'll need to turn a pop-up spray head into a drip irrigation system that accurately waters flower beds, shrubs, and other plants.