ADJUSTABLE VALVE: U-shaped switch interface, the switch does not follow the rotation of the switch when adjusting the switch, one-handed operation, no rotation (different by the interface), the switch can be finely adjusted (different internal structure), provide different amounts of water for different plants and flowers. PERFECT DESIGN: Bottle cap design, suitable for all drinks like Pepsi, Cola, Dasani water, Dr.pepper, Deet Cola, Coca Cola which are easy to find. This bottle opener is easy to install, does not need to be rotated, only needs to be inserted and released again, never leaks, is windproof and anti-collision, and is suitable for large beverage bottles EASY TO USE: Quick installation, no turning required, just put in place, plant watering device, water supply directly to plant roots, suitable for most plants. Easy flow control means your plants get the right amount of water. Suitable for your vegetables, indoor and outdoor gardens, hanging plants, small trees, shrubs, daily water plants, potted plants, indoor plants, herbs, garden plants, hanging baskets, sinks. KEEP YOUR PLANTS SIMPLE FOR ME: Spend time with your family. These self-watering thorns will take good care of your plants. You can also save time and energy without having to water every day and no longer have to carry heavy watering cans. Material: High quality ABS plastic Easy to use: 1. Plug the control valve into the plant waterer. 2. Drill or cut holes in the bottom of the bottle. 3. Adjust the flow as needed. 4. Turn the bottle upside down and insert the irrigation pins into the ground. Package includes: 15 x Plant Watering Device