Connection: 1/4" barb thread connection, 1/4" hose for 4mm/7mm tube (inner/outer). Package includes: 100 x micro drippers . 360 degree adjustable: 8 holes to regulate water flow and cut it off. Large water passages and automatic flushing help prevent clogs. Easy to use: ideal for watering potted plants, suitable for agricultural irrigation, lawn and watering garden. Water conservation: during long-term laying or pressure fluctuations, it can be kept constant, irrigation uniformity, slow watering speed allows to the ground to more completely absorb water in the root zone of plants. Thread diameter: 1/4 inch, spray radius: 0-0.5m Suitable for 4mm/7mm tube (inner/outer diameter) Automatic cleaning, the starting water erosion flow channel, anti-clogging performance < p>Able to maintain constant irrigation uniformity during long periods of installation or pressure fluctuations Ideal for automatic watering of potted plants 1/4-inch connection barbed thread Efficient water use and water saving