Environmental protection and durability The automatic watering head is made of high quality PP plastic, safe to use, very durable and sturdy. You can use it repeatedly because each drip tube can ensure a long service life. 12 irrigation techniques in 3 colors: blue, green, . 4 pieces per color. Adjustable water flow The automatic watering nail with regulating valve can control the dripping speed. You can control the amount and speed of drip irrigation for different plants and flowers. Don't worry about the plants wilting while driving. Easy to use Just drill a few holes at the bottom of the bottle to allow air to circulate, and then nail these self-watering nails to the ground. Suitable for all types of bottles Our irrigation nozzles are suitable for most open bottles on the market. Such as Coca-Cola bottles, soda bottles, juice bottles, etc. Widely Used Whether your plants are indoor or outdoor, home or office, this automatic watering technique can ensure that your plants retain moisture. These plant watering devices are perfect for potted plants, indoor plants, garden plants, hanging baskets, covered pots, hanging plants or any other plants. Product color: blue green Number of products: 12 Size: 15.2 x 2.5 cm. Description: Automatic watering nail with valve for watering indoor plants and flowers. Ingenious plant irrigation technology with adjustable valve. Simply adjust the valve to your system requirements. Drill a hole in the bottom of the trash can to allow air to pass through, then place the soaking pin and water bottle into the pot. These plant watering techniques are very suitable for your vegetables, hanging plants, small trees, daily water plants, potted plants or other plants. Features: Material: PP Size: 15.2 cm long Color: , blue, green Package Content: Automatic Drip Irrigation Device * 12 Yeuri