Material:Made of engineering Plastic, durable and sturdy, safe and eco-friendly to use. It can automatic cleaning, anti-clogging performance. Independent Adjustment:Each irrigation drippers of the irrigation system can be adjusted individually, 8 spray hole and can adjust water flow rate , also for cutting off the water flow through the - / + switching direction sign on the red cap, which effectively improve the survival rate of the plant. Connector:Has a 1/4-inch barb thread connection, Suitable for 4mm/ 7mm(Inner/ Outer diameter) tube. Save Water and Save time:The irrigation watering system efficient and energy-saving than traditional drippers. Full open can irrigate a 10 to 12 inch circle at a time. The garden watering system is very suitable for agriculture, lawns, garden greenhouses, flower beds, patio drip irrigation. Save water, save time. Effective use of water:It can be kept constant during long-term laying or pressure fluctuations, uniform irrigation, and slow watering, so that the soil absorbs water more completely in the plant root zone. Package included: 100 X Irrigation Drippers