Package included:40pcs bottle drip irrigation+40 pz interruttore +1pz manuale di istruzioni. Material: PP plastic, convenient and practical.Bottle drip irrigation, which is durable, sturdy , eco-friendly, reusable, recyclable and durable. Adjustable valve: The flow rate can be controlled. The plant watering device with control valve can control the drip speed from 0-60 seconds/drip, and the continuous drip lasts 1-15 days. Adjust the valve uniquely to meet your needs without complicated setup steps. Save time and water. Easy to Use: Bottle drip irrigation, quick installation, no need to rotate, just put it down, plant sprinkler, supply water directly to plants. roots, suitable for most plants. Easy flow control means your plants get the correct amount of water. Suitable for bottle: Pepsi bottle, Pepsi bottle, Coca-Cola, 1.1 inch inside diameter bottles. (Bottle not included). Most beverage bottles.