Reliable Quality: our drip irrigation emitters are made of plastic, which can work in various harsh outdoor environments to ensure healthy growth of plants and non deformable, and our flow option is 4 GPH. Wide Range of Use: our drip irrigation dripper is suitable for situations where the irrigation pipeline is too long, and also can be applied for irrigating landscapes, potted plants, hanging baskets and other plants, including shrubs, trees, flowers and more. Reasonable Design: our drip system emitters are designed with turbulent flow and self cleaning, and the cover of the dripper can be removed for cleaning and maintenance, reducing the risk of dirt clogging; The dripper has a generous flow path for an accurate, reliable supply of water that is always under pressure. Many Advantages: our drip line emitter can save water, reduce plant stress so that these plants will be healthier, leading to earlier production, and save time, no more hand watering, less garden maintenance. Material: PP plastic. Can be connected to 4/7 capillary or punched in PE pipe for installation. Working pressure: 0.5-4.0kg. Specifications: yellow 2L/H, black 4L/H, blue 8L/H.