360 degree adjustable: 8 spray holes, can adjust the water flow, also can stop the water flow. Large water channels and self-flushing function help to avoid blockages. Connectors: 1/4 inch plug nipple, 1/4 inch hose, for 4mm/7mm hoses (inner/outer diameter). [Before assembling, be sure to put the connector in 70-80 °C water for 10 seconds. After cooling, the tube will remain tight.】 Widely used: Ideal for watering potted plants, drip irrigation for agriculture, lawn, garden. Water efficiency: Ability to maintain constant and consistent watering under prolonged oviposition or pressure fluctuations, with a slow watering rate allowing soil to better absorb the water in the root area of the plant. Package includes: about 200 micro drippers. The dripper may have a smell in the durable packaging, please open it and return to air convection within 1-2 days, the smell will disappear normally.