Pack of 50 Drip Head 1/4 Inch Hose Garden Irrigation Misting Micro Flow Dripper 8 spray hole and can adjust water flow rate, also for cutting off the water flow Great for agriculture, lawn, garden sprinkler irrigation drip Connection: Approx. 1/4'' hose, Inner diameter: Approx. 4mm Outer Diameter: Approx. 7mm Material: plastic