Quantity: You will receive 30 pieces of automatic watering sets for vegetables, potted plants, indoor plants, watering plants daily, patio plants, herbs, hanging baskets, desk pots, hanging plants, outdoor gardens, small trees, shrubs. Environmentally friendly materials. Reusable. ADJUSTABLE FLOW RATE: The plant water dispenser valve can control the drip rate from 0-60 s/1 drip. Slow dripping lasts 1-15 days. You can set the correct water flow according to the plant's water needs. Ideal for short business trips or short vacations. Simple and convenient; installed without tools. Just drill some holes in the bottom of the bottle or cut the tail of the bottle to keep the air flowing. Accurate water volume: For different amounts of water for different plants and flowers. Do not use plant watering devices. Other watering devices are either too little or too much for some plants. Old leaves just turn yellow and fall off. But if new growth turns yellow, it may indicate over-watering or underwatering. Easy to Use: Our automatic watering system is quick and easy to install. Drill or cut a few holes in the bottom of the bottle. Tighten the drip irrigation devices and then insert them into the soil. The automatic watering garden set is compatible with beverage bottles of different calibers, such as Pepsi, Coca-Cola, Lipton, and Dee Coke. Suitable for most bottles with an inner diameter of 1.1 inches.