24-pack Self-Watering Spikes - Automatic Plant Waterer - Adjustable Valve - Irrigation System for Indoor and Outdoor Garden 24 pcs

The plant watering device with control valve can control the drip speed from 0-60s/drip, and the sustained drip lasts for 1-15 days. Just adjust the valve to meet your needs without complicated setup steps.\n【Simple and Convenient】Installed without tools, just drill a few holes in the bottom of the bottle or cut off the back of the bottle to keep the air flowing.\n【Use in Multiple Scenes】Vegetables, potted plants, houseplants, daily watering plants, patio plants, herbs, hanging baskets, desk pots, hanging plants, outdoor gardens, small trees, shrubs.\n【Warning】Compatible with all 1.1 inch/2.8 cm inner diameter, suitable for most beverage bottles, not suitable for mineral water and purified water bottles. (Measure the inner diameter of the bottle including the thread size before installation)