High-quality PP material: These irrigation drippers are made of high-quality PP plastic material, which is UV-resistant, safe and non-toxic, sturdy and durable, and not easy to age or break. They can work in your garden for a long time. Adjustable design: The drip irrigation dripper has 8 spray holes. The dripper can be individually adjusted by rotating the adjustable switch to meet the different water needs of different plants. The water flow can be adjusted or turned off, and the drippers do not affect each other. Water saving: The drip dripper can water all plants at the same time. The slow watering speed can keep the soil constant, allowing plant roots to absorb water more fully and reduce evaporation, which is environmentally friendly and water-saving. Anti-clogging: The large water channel and automatic flushing function of the garden drip irrigation system help prevent clogging. The water erosion channel is automatically cleaned and it can also be removed for cleaning to ensure that the dripper will not be clogged by moss. How to use: These adjustable drippers are suitable for 4mm/7mm (inner/outer diameter) tube. After installation and connection, they can be closed by rotating left and right to adjust the water flow according to your needs.