A total of 12 automatic drip irrigators Adjustable Flow Rate- The water flow rate can be adjusted by adjusting the control valve. Our automatic plant watering device can control the speed, and the continuous dripping time is 3-20 days. When traveling, traveling, or vacationing, there is no need to worry about plants withering. NEW UPGRADED DESIGN- Compared with other ordinary products, our upgraded watering nails do not need to poke holes in the bottom of the bottle when using. It also has a nicer look and comes in three shades of blue, orange and green. The most important thing is that it will not stop watering due to the influence of water pressure. ECO-FRIENDLY AND EASY TO USE- Plant watering nails are made of high-quality PP material, non-toxic, odorless, and non-fading. Without any complicated installation, you just plug these automatic watering units into the soil. APPLICABLE TO 90% OF BOTTLES- Self-watering nails are suitable for 90% of bottles, so you don't have to waste your precious time looking for the right bottle. Such as Pepsi bottles, Coca-Cola bottles and other bottles with an inner diameter of 1.1 inches. Multi-scene application- Plant self-watering device can be used in indoor and outdoor gardens, daily aquatic plants, potted plants, indoor plants, herbs, garden plants, hanging baskets, flower pots, hanging plants, small trees, shrubs.