Product description: Drip irrigation accessoriesMaterial: PPColor: BlueSize: 2.5*1.4cmPacking contents: 200PCS1. Color: Black and Blue Material: Plastic2. Connection:1/4-inch barb thread connection, 1/4'' hose, Suitable for 4mm/7mm(Inner/ Outer diameter) tube3.360 Degree Adjustable:8 spray hole and can adjust water flow rate , also for cutting off the water flow. Great for watering potted plants,For agriculture, lawn, garden sprinkler irrigation drip4. Full open they will cover a 10 to 12 inch circle. Rotation of the cap allows adjustment of flow and diameter of throw down to a complete shut-off via a ratchet mechanism on the cap and a notch on the base5. Making effective use of water:Able to maintain constant when Long laying or pressure fluctuations, irrigation uniformity, slow watering rate allows soil to absorb water more completely in the root zones of plants