Gustave 20Pcs Self Watering Planter Insert, Plant Self Watering Spikes Auto Drippers Irrigation Devices with Slow Release Control Valve Switch "Blue"

Adjustable Valve: The flow rate can be controlled. Save time and water. Automatic watering spikes can prevent watering Too much and make the plant healthier. The plant watering cup is compatible with bottles with an inner diameter of 1.1 inches. Easy to Operate - No tools are required for installation. Perfect for potted plants, houseplants, patio plants, hanging baskets, deck pots, hanging plants or any other plants.