DIG Button Drip Emitter with Barbed Inlet - Pack of 400The Button Drip Emitters utilize a unique labyrinth flow path design, producing a turbulent flow for consistent operation with less chance of clogging. The drip emitters are available in flow rates of . 5, 1 or 2 GPH and operate at 10 to 20 PSI. Features Unique design with a minimum width passage of 0. 043 provides a turbulent flow to prevent clogging Uniform flow rate Constructed of high quality material to ensure stability and long life Color coded