Automatic Watering: With this plant drip regulator, you don't need to worry about flowers or plants for a few days, just insert the spikes into the potted plant up to the root. Easy to Use: Easy to install. Fill the bottle with water, insert it into the spike, adjust the flow rate and insert it into the soil. Suitable for Most Bottles: Suitable for most bottles with an inner diameter of about 2.9 cm. Multi-scenario Use: Suitable for various plants such as potted plants, indoor plants or courtyard plants. Provide different amounts of water. Use according to the needs of the plants. Note: The data are all manually measured, please allow an error of 1-3 cm. Due to differences in light and display, there may be some color differences, please refer to the actual item received.