About the Raindrip R108CT In-Line Pressure Compensating Dripper, 1/2 gph, Red Base
For landscape and container plants. Maintains constant flow rate even on hillsides or long circuits. Red (1/2 gph) - ideal for heavy soil (clay). Black (1 gph) - ideal for medium soil (loam) Green (2 gph) - ideal for light soil (sandy).